In a symptom of human development pushing native wildlife further outside their natural habitats, mountain lions living in the greater Los Angeles area have been changing the timing of their activities to avoid interactions with hikers, joggers, cyclists and other recreationists, according to a new study led by researchers at University of California, Davis (UC Davis).
The researchers found that mountain lions who lived in areas with more human recreation had shifted to become increasingly nocturnal compared with more remote-dwelling lions, who were primarily active around dawn and dusk, a press release from UC Davis said.
“People are increasingly enjoying recreating in nature, which is fantastic,” said lead author of the study Ellie Bolas, a UC Davis Ph.D. candidate in the Department of Wildlife, Fish and Conservation Biology, in the press release. “This flexibility we see in mountain lion activity is what allows us to share these natural areas together. Mountain lions are doing the work so that coexistence can happen.”
The authors said the findings offered a hopeful example of the coexistence of wildlife and humans in a large, densely populated area.
“Mountain lions prefer to avoid people, but in a metro area of more than 18 million people, natural areas inhabited by mountain lions and other wildlife are also heavily used by recreationists,” the press release said.
To find out if and in what ways mountain lions were shifting their activities in response to the recreationists, the research team monitored 22 lions’ movements in and around the Santa Monica Mountains from 2011 to 2018.
Biologists captured lions living inside the Santa Monica Mountains National Recreation Area and fitted them with GPS and accelerometer collars. They then analyzed the data, quantifying the area’s human recreational activity using a global database of activities tracked by GPS.
“These results are really important in that they show how humans may be affecting wildlife in less obvious ways than killing them with vehicles,” said Seth Riley, the park’s head of wildlife, in the press release. “The study also continues to drive home the amazing fact that a population of a large felid predator persists in one of the largest urban areas in the world. That would not be possible if mountain lions weren’t able to adjust to human activity in ways like this.”
The findings demonstrated that the highest recreational activity levels were in Griffith Park, while Los Padres National Forest and the Santa Susana Mountains had the least amount of activity.
“The least nocturnal mountain lion was female P13 in the central and western Santa Monica Mountains. Females, in general, were found to be more active closer to sunrise and during daylight hours as compared to males,” the press release said.

Female P13 was the least nocturnal mountain lion studied. National Park Service
The authors said the reason for that could be so female cats can avoid running into males, who pose a danger to them and their kittens.
Two male mountain lions occupying isolated natural areas with an abundance of trails, high recreation levels, surrounding freeways and intense development were the most nocturnal. Both lived in two of the most limited home ranges for adult males ever recorded. The most nocturnal lion in the study — P41 — lived in the small Verdugo Mountain Range, which spans several cities.

Male P41, the most nocturnal mountain lion in the study, who lived in the Verdugo Mountains near Los Angeles, an area with high levels of human recreation. National Park Service
The second most nocturnal of the lions was P22, who lived in Griffith Park and became famous for crossing two busy freeways when he was young. He continued to occupy the area until he was killed in 2022 at 12 years old — one of the most senior cats in the study.

P-22 was among the mountain lions of Los Angeles who shifted his activities to be more nocturnal. National Park Service
The study’s authors said the lions in the study show how mountain lions actively avoid humans when faced with increased activity, rather than habituating themselves to them.
The authors said that doesn’t mean mountain lions should have to do all the work. Humans can help protect them, as well as themselves, by remembering that they are likely to be active at dawn or dusk in populated areas, and be on the lookout for them when driving at night.
In the Los Angeles area, mountain lions face many challenges and dangers, including busy roads where they are often killed, fragmented habitat, exposure to rodenticide and low genetic diversity.
“Even something as innocuous as recreation can add to these other stressors we’re bringing into their lives, potentially by altering the amount of energy they have to expend for hunting and other needs,” Bolas said in the press release. “But we can feel a sense of optimism that they are flexible in the timing of their activity. Coexistence is happening, and it’s in large part because of what mountain lions are doing.”
The study, “Human recreation influences activity of a large carnivore in an urban landscape,” was published in the journal Biological Conservation.
The post ‘Coexistence Is Happening’: LA Mountain Lions Change Their Hours to Avoid Recreationists appeared first on EcoWatch.
https://www.ecowatch.com/mountain-lions-los-angeles-coexistence.html
Green Living
Can You Recycle Computers?
Last Updated on January 21, 2026
Picture this: Your laptop of three years decides it’s going to conk out. What’s the most sustainable solution? Seeing if you can get it repaired, of course.
Fighting planned obsolescence is a full time job, and it occurs with way more than just electronics.

But lets say you can’t repair your laptop for some unforeseeable reason…what then? You recycle it of course.
Computers don’t belong in landfills, nor do most conventional curbside recycling programs accept them. So how do you recycle computers? Here’s everything you need to know about computer recycling (and why we need to dispose of them properly).
why should you recycle computers?
First, lets tackle the reason we should bother to recycle computers. Computers are made up of several components – and when we dump them out, they become notorious for leaking toxins and carcinogens into the environment. This poses a risk for humans, wildlife, and soil quality alike.
However, if we recycle computers, all those components get a second shot at life. There are several valuable materials in our old computers that can be used to make new electronics, thus reducing waste and pollution.
According to the EPA, recycling 1 million laptops saves enough energy to power ~3,500 U.S. homes for a year.
And if that’s not reason enough – improperly disposed computers can put your personal or business files at risk of being recovered. And that can escalate to data breaches or reputation damage (yikes).

how do I get rid of my old computer?
To get rid of your old computer, you must first back up your data, sign out of all accounts, wipe & destroy the hard drive, then recycle the computer through local e-waste centers or retailers with take-back programs (Best Buy, Staples, etc.).
To wipe a hard drive, be sure to back up any important data first. Use built-in tools like ‘reset this PC’ or check with your computer’s manufacturer to see specific instructions. For example, here’s how to wipe a Dell hard drive and erase a Mac hard drive.
For absolutely no chance of your data being recovered, it’s always best to remove and destroy the hard drive, if possible. Here’s a guide to destroying a hard drive safely.
Once the hard drive is no longer an issue, you can recycle computers through a number of drop-off or mail-in options.
drop off:
- Local e-waste recycling events (make sure to ask if your specific computer will be accepted in advance). Check your local .gov to see when your next one will be!
- Best Buy accepts various desktops, laptops, and tablets, including some accessories. There’s a limit of 3 items per household per day. They charge a small fee for recycling monitors.
- Staples accepts computers & Macs. They charge a fee for monitors. When you recycle, you get rewards with their store!
- Use ERI’s recycle search and find recycling locations near you. Just type in “computer recycling” and your zip code to learn what your options are.
mail-in:
- Several manufacturers will accept mail-in recycling for their computer models. Dell and HP have trade-in programs for computers that meet certain standards, as well as recycling options for lesser functioning computers of any brand. Apple also accepts trade-in and recycling for several devices, including computers.
- Green Citizen offers free mail-in recycling for laptops, desktops, and tablets, but there may be fees for data destruction.
Most of these places will also accept computer accessories, like keyboards, mice, etc. But be sure to double check!

should you remove the hard drive from a computer before recycling?
Yes, always remove the hard drive before recycling. It’s best to wipe it, then remove it and destroy it. Because even a wiped hard drive can still be recovered, to an extent.
Even if you empty the recycling bin on your computer it doesn’t guarantee that the content is gone because the computer marks that data space to be overwritten with new data. So if the data hasn’t been overwritten, data recovery software can pick it up.
does best buy erase hard drives when recycling?
Best Buy offers tips and advice on wiping hard drives and data for Windows computers prior to drop off, but won’t actually do it for you. It’s best to go prepared by wiping/destroying your hard drive first.
So, what did you think of this guide to recycling computers? Let me know in the comments!
The post Can You Recycle Computers? appeared first on Going Zero Waste.
Green Living
Best of Sustainability In Your Ear: Carbonfuture is Building the Trust Infrastructure for Carbon Removal
Read a transcript of this episode. Subscribe to receive transcripts: Learn more.
The carbon removal industry stands at a crucial crossroads. While cutting emissions remains essential, avoiding catastrophic warming now requires pulling billions of tons of CO2 from the atmosphere permanently. But as this nascent field grapples with questions of legitimacy, scalability, and accountability, a critical challenge remains: How do we build the infrastructure needed to track, verify, and certify that carbon has actually been removed and stays removed? Meet Hannes Junginger-Gestrich, CEO of Carbonfuture, a company helping define the monitoring, reporting, and verification (MRV) infrastructure that could transform carbon removal from scattered efforts into a functioning ecosystem. Launched five years ago, Carbonfuture has emerged as what CDR.fyi describes as “the largest facilitator of durable carbon removal” by volume. The company’s digital platform integrates data across the carbon removal life cycle, connecting diverse approaches like biochar, enhanced rock weathering, and direct air capture with buyers seeking to meet climate commitments. “We are probably more the crowd, the ground keepers in a stadium that makes sure that everything is provided properly,” Hannes explains, using a sports analogy to describe their role: “We are the ground keepers in a stadium [who ensure] the players have a playing field that’s in shape and no one gets hurt, and the audience can come and they pay their tickets and have a good experience.”
The MRV infrastructure becomes crucial as corporate demand for verified carbon removal grows and trust becomes currency. One of the most interesting aspects of the conversation centers on balancing data confidentiality with transparency needs, particularly when collecting data along industrial value chains from agricultural residue producers to biochar processors to end users. Perhaps most telling is Junginger-Gestrich’s unwavering commitment to scientific rigor over short-term economic gains: “We never had to trade off between rigor and allowing a not so good project on our platform for economic reasons. We always lean to the scientific and rigorous side.” This philosophy has guided Carbonfuture’s work with leading buyers like Microsoft, helping develop increasingly sophisticated approaches to carbon removal verification. While Junginger-Gestrich expresses concern about delayed emission reductions globally, he remains optimistic about carbon removal scaling: “I think we will be on the path to the gigatons by 2040 for sure.” His vision emphasizes ecosystem thinking over vertical integration, aiming to drive down costs while creating network effects that could accelerate the entire field. As governments worldwide grapple with climate policy, the monitoring, reporting, and verification systems companies like Carbonfuture are developing now may well determine the success of our collective effort to reverse climate change. You can learn more about Carbonfuture at carbonfuture.earth.
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Editor’s Note: This episode originally aired on September 1, 2025.
The post Best of Sustainability In Your Ear: Carbonfuture is Building the Trust Infrastructure for Carbon Removal appeared first on Earth911.
https://earth911.com/podcast/sustainability-in-your-ear-carbonfuture-is-building-the-trust-infrastructure-for-carbon-removal/
Green Living
8 Ways to Reduce Your Impact Today
This article contains affiliate links. If you make a purchase through these links we will receive a small commission from the sale that helps fund our work.
1. Say ‘No’ to To-Go Waste
Even if you’re constantly on the run, it’s possible to reduce the amount of waste you generate by packing your own reusable mug, water bottle, food containers, and cutlery. The majority of restaurant to-go containers are still made from plastics that don’t recycle easily, so they’re used once and then thrown away. Each plastic cup, fork, straw, and clamshell box costs money, and you can be sure this cost is passed onto consumers — not to mention the environmental costs of all that plastic waste.
2. Water Well
Water is a precious resource, which is often a fact overlooked in developed countries where we can just turn on the tap and get clean, safe water. However, according to a 2025 WHO/UNICEF report, 2.1 billion people globally still lack access to safely managed drinking water, and the global potable water supply is under pressure from climate change and population growth. You can decrease your water consumption by following a few simple steps.
Flush and run sparingly: The average toilet uses between 1.6 and 5.5 gallons of water per flush. If you are already “letting it mellow,” save even more water by turning on the tap only when absolutely necessary. There’s no need for the water to run when brushing your teeth, washing your hands, or doing the dishes, for example.
Make sure it’s really dirty before washing: Clothing, dishes, and your body should undergo the wash and rinse cycle only when necessary. Use the same water glass all day, and wear those jeans more than once.
3. Hang It Out to Dry
Clothes dryers are among the most energy-intensive household appliances. Most of us are not willing to give up cold milk and crisp veggies from the fridge, but we can easily use the dryer less often, which can add up to significant savings of energy and money.
As an added bonus, letting your clothes air dry extends their usable lives (it is much less taxing on the stitching and fabric), it gives you a good excuse to get outside in nice weather, and line-dried laundry smells better too! If you live in a place where drying clothes outside right now would mean wearing duds that are cold and wet, consider using indoor drying racks to accomplish the same energy-free job.
4. Lights, Camera, Out!
Many electronic devices — such as phone and camera chargers, televisions, and computers — continue to draw energy even when in the “off” position. To avoid phantom power use, unplug such devices or plug everything into a power strip you can turn off when not in use. Encourage these same practices at your workplace. And no matter where you are, always turn off unnecessary lights.
5. Be a Wise Post-Consumer
In the digital age, many of us still rely on a steady stream of paper in our offices, kitchens, and bathrooms. Here are some easy suggestions for keeping more trees outside.
Print sparingly: When you do need to hold a document in your hand, be sure it has been printed and/or copied on both sides, and of course, be sure to recycle when done.
Buy the highest level of post-consumer, recycled paper: From toilet paper to notebooks, there is rarely a reason to use virgin paper. Look for the percentage on the packaging (such as products made with 100% recycled or 50% post-consumer materials), and also look for paper that is processed chlorine-free (PCF).
Class it up with cloth: Reusable napkins are not just for fancy dinner parties. They can be washed and reused indefinitely. The same goes for old T-shirts or towels, which can be repurposed as rags and used instead of disposable paper towels.
6. Resist the Urge to Splurge
A lack of excess cash can serve as a great excuse to reduce your consumption. Here are a few suggestions to help you consume less.
Take a consumption vacation: Consider taking the day or week off from making any new purchases, with the exception of necessities such as health products and food. By doing this, you’re not only saving money, but you’re also reducing the waste created throughout the life cycle of each new product, the packaging used, and the fuel consumed and produced in transporting products from the original resources to the manufacturer to your local store.
Buy nice, don’t buy twice: For necessities, make sure that you buy the highest quality, most energy-efficient, environmentally friendly model available within your budget. From appliances (Energy Star) to food (Local Harvest), there are low-impact alternatives for almost everything on the market.

7. Bid Your Car Adieu
We are a society that loves our cars, but there are many alternatives to a day spent solo in your gas-guzzling ride. Backing out of your car rut can also provide new opportunities to socialize and get some exercise.
Get on the bus: Many cities and towns have excellent public transportation systems that include buses, subways, and trains. You’ll be surprised at the new friends you make or the added reading time you find when not behind the wheel.
Carpool with friends or co-workers: Rideshare services now make it easier than ever to find a match. Uber’s UberX Share allows passengers traveling in the same direction to share a ride and reduce costs while cutting emissions. Lyft and Waze discontinued their shared rides programs in 2023.
Get on a bike or walk: While riding your bike or walking might take a little longer to reach your destination, the fresh air, reduced carbon emissions, and the exercise more than make up for the extra minutes.
Phone it in: Explore telecommuting or teleconferencing options with your employer to significantly reduce your daily commute. According to Global Workplace Analytics, a typical employer can save an average of $11,000 per half-time remote worker per year, while employees save between $2,000 and $6,500 annually from reduced commuting and related costs. Telecommuting just a few days a week will save you and your employer money.
8. Ban Planned Obsolescence
The more we view potential waste as building blocks for new products, the lower our overall impact will be. Granted, some products (“gum” comes to mind) are decidedly single-use items, but with a little creativity, many others can easily be creatively repurposed.
Originally published on April 6, 2009, article was most recently updated in January 2026.
The post 8 Ways to Reduce Your Impact Today appeared first on Earth911.
https://earth911.com/inspire/8-ways-to-reduce-your-impact-today/
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