How London's Trees Are Fighting Climate Change

iStock
iStock

A slew of health benefits are associated with being around trees. They have been known to reduce people's stress and improve overall mental health, and according to one 2015 study, a walk in the woods can make you feel seven years younger.

They also do a great deal of good for the environment by mitigating air pollution and absorbing carbon dioxide from the atmosphere. These benefits aren’t just felt in rural areas, either. A new study by researchers at University College London found that the trees in the London borough of Camden store as much carbon per hectare as rainforests, Fast Company reports.

A tree’s ability to soak up carbon dioxide during photosynthesis is especially useful when the tree is in an urban area, where industrial activity—and the burning of fossil fuels—tends to be more prevalent. For the study, published in the journal Carbon Balance and Management, the researchers used laser scanning methods to take their own carbon readings of trees from the ground as well as the air, and then compared their findings with publicly available Lidar (light detection and ranging) data from the UK Environment Agency. They were then able to estimate the biomass of 85,000 trees in Camden, where the university is based.

They determined that Camden had a median carbon density of around 55 tons of carbon per hectare (t/ha). Greener areas of the borough, like Highgate Cemetery, had a carbon density of 380 t/ha—levels that are typically seen in tropical rainforests. For comparison, major cities in the U.S. have carbon densities of 7.7, and in China the figure is 21.3.

So what exactly does this mean? Trees could theoretically help offset global warming by removing carbon dioxide (a greenhouse gas) from the air and storing it as biomass, thereby cooling the atmosphere. However, some climate scientists argue that it’s more complicated than that, and any impact felt by tree-planting initiatives today may not be seen for decades. Still, with all of the other benefits trees offer, planting a seed or two couldn't hurt.

[h/t Fast Company]

10 of the Best Indoor and Outdoor Heaters on Amazon

Mr. Heater/Amazon
Mr. Heater/Amazon

With the colder months just around the corner, you might want to start thinking about investing in an indoor or outdoor heater. Indoor heaters not only provide a boost of heat for drafty spaces, but they can also be a money-saver, allowing you to actively control the heat based on the rooms you’re using. Outdoor heaters, meanwhile, can help you take advantage of cold-weather activities like camping or tailgating without having to call it quits because your extremities have gone numb. Check out this list of some of Amazon’s highest-rated indoor and outdoor heaters so you can spend less time shivering this winter and more time enjoying what the season has to offer.

Indoor Heaters

1. Lasko Ceramic Portable Heater; $20

Lasko/Amazon

This 1500-watt heater from Lasko may only be nine inches tall, but it can heat up to 300 square feet of space. With 11 temperature settings and three quiet settings—for high heat, low heat, and fan only—it’s a dynamic powerhouse that’ll keep you toasty all season long.

Buy it: Amazon

2. Alrocket Oscillating Space Heater; $25

Alrocket/Amazon

Alrocket’s oscillating space heater is an excellent addition to any desk or nightstand. Using energy-saving ceramic technology, this heater is made of fire-resistant material, and its special “tip-over” safety feature forces it to turn off if it falls over (making it a reliable choice for homes with kids or pets). It’s extremely quiet, too—at only 45 dB, it’s just a touch louder than a whisper. According to one reviewer, this an ideal option for a “very quiet but powerful” heater.

Buy it: Amazon

3. De’Longhi Oil-Filled Radiator Space Heather; $79

De’Longhi/Amazon

If you prefer a space heater with a more old-fashioned vibe, this radiator heater from De’Longhi gives you 2020 technology with a vintage feel. De’Longhi’s heater automatically turns itself on when the temperatures drops below 44°F, and it will also automatically turn itself off if it starts to overheat. Another smart safety feature? The oil system is permanently sealed, so you won’t have to worry about accidental spills.

Buy it: Amazon

4. Aikoper Ceramic Tower Heater; $70

Aikoper/Amazon

Whether your room needs a little extra warmth or its own heat source, Aikoper’s incredibly precise space heater has got you covered. With a range of 40-95°F, it adjusts by one-degree intervals, giving you the specific level of heat you want. It also has an option for running on an eight-hour timer, ensuring that it will only run when you need it.

Buy it: Amazon

5. Isiler Space Heater; $37

Isiler/Amazon

For a space heater that adds a fun pop of color to any room, check out this yellow unit from Isiler. Made from fire-resistant ceramic, Isiler’s heater can start warming up a space within seconds. It’s positioned on a triangular stand that creates an optimal angle for hot air to start circulating, rendering it so effective that, as one reviewer put it, “This heater needs to say ‘mighty’ in its description.”

Buy it: Amazon

Outdoor Heaters

6. Mr. Heater Portable Buddy; $104

Mr. Heater/Amazon

Make outdoor activities like camping and grilling last longer with Mr. Heater’s indoor/outdoor portable heater. This heater can connect to a propane tank or to a disposable cylinder, allowing you to keep it in one place or take it on the go. With such a versatile range of uses, this heater will—true to its name—become your best buddy when the temperature starts to drop.

Buy it: Amazon

7. Hiland Pyramid Patio Propane Heater; Various

Hiland/Amazon

The cold’s got nothing on this powerful outdoor heater. Hiland’s patio heater has a whopping 40,000 BTU output, which runs for eight to 10 hours on high heat. Simply open the heater’s bottom door to insert a propane tank, power it on, and sit back to let it warm up your backyard. The bright, contained flame from the propane doubles as an outdoor light.

Buy it: Amazon

8. Solo Stove Bonfire Pit; $345

Solo Stove/Amazon

This one is a slight cheat since it’s a bonfire pit and not a traditional outdoor heater, but the Solo Stove has a 4.7-star rating on Amazon for a reason. Everything about this portable fire pit is meticulously crafted to maximize airflow while it's lit, from its double-wall construction to its bottom air vents. These features all work together to help the logs burn more completely while emitting far less smoke than other pits. It’s the best choice for anyone who wants both warmth and ambiance on their patio.

Buy it: Amazon

9. Dr. Infrared Garage Shop Heater; $119

Dr. Infrared/Amazon

You’ll be able to use your garage or basement workshop all season long with this durable heater from Dr. Infrared. It’s unique in that it includes a built-in fan to keep warm air flowing—something that’s especially handy if you need to work without wearing gloves. The fan is overlaid with heat and finger-protectant grills, keeping you safe while it’s powered on.

Buy it: Amazon

10. Mr. Heater 540 Degree Tank Top; $86

Mr. Heater/Amazon

Mr. Heater’s clever propane tank top automatically connects to its fuel source, saving you from having to bring any extra attachments with you on the road. With three heat settings that can get up to 45,000 BTU, the top can rotate 360 degrees to give you the perfect angle of heat you need to stay cozy. According to a reviewer, for a no-fuss outdoor heater, “This baby is super easy to light, comes fully assembled … and man, does it put out the heat.”

Buy it: Amazon

Sign Up Today: Get exclusive deals, product news, reviews, and more with the Mental Floss Smart Shopping newsletter!

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Thailand National Park Officials Mailed Trash Back to Litterbugs

Spiderstock/iStock via Getty Images
Spiderstock/iStock via Getty Images

If hefty fines aren't enough to stop people from littering in Thailand's national parks, officials hope that good, old-fashioned guilt-tripping will do the trick. As The New York Times reports, Khao Yai National Park in central Thailand responded to a recent littering offense by mailing abandoned trash back to the litterbugs who left it there.

The responsible party left behind a tent filled with trash after camping overnight in Khao Yai. In Thailand, littering in a national park is punishable by up to five years in prison and a $16,000 fine. The park officials took a less conventional approach to this particular crime. After cross-referencing equipment rental forms with a discarded prescription bottle, they were able to track down the offenders and mail them their forgotten garbage.

The clear bag of trash came with a note. “You have forgotten some of your belongings at the Khao Yai National Park,” it read. “Please let us return these to you.” Varawut Silpa-archa, Thailand's environment minister, referenced the incident in a Facebook post, writing, “I will pick up every single piece of your trash, pack them well in a box, and mail it to your home as a souvenir." In addition to getting a package of trash in the mail, the unidentified campers have also been banned from staying in the park overnight.

Officials tasked with protecting the environment have seen firsthand the damage litter can cause. Plastics can take centuries to break down, and in that time they pose a serious threat to wildlife. Trash that builds up in places where people seek refuge can also be bad for their mental health. A 2015 study found that seeing litter on a beach counters the restorative qualities of being in nature.

[h/t The New York Times]