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September Astronomical Highlights: Andromeda Galaxy and a Comet

By Kelly Kizer Whitt

Relief from the heat of summer and long days baking in the sun is on its way. The Northern Hemisphere's fall equinox occurs on Sept. 22 at 6:54 P.M. PDT. The harvest moon—the full moon that comes closest to the equinox—is just two nights later, on Sept. 24 at 7:53 P.M. PDT. On this date, the moon is in the constellation Pisces.

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Mario Gutiérrez / Getty Images

6 of the Best 2018 EVS, Both Full Battery Electric and Plug-In Hybrid

By Jim Motavalli

The future of the auto industry is increasingly likely to be electric—although you wouldn't necessarily know that from sales numbers. Just under 200,000 plug-in cars were sold in the United States last year (out of a new-car market of 17.25 million). In California, cars with plugs made up 4.6 percent of the new-car market in 2017, while nationwide the number increased only slightly, to 1.16 percent of total auto sales. But 2018 is shaping up to be better, with 36 percent higher EV sales in the first four months than in the same period the previous year.

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David Gessner

Barbed Wire and Redrock at Bears Ears National Monument

By David Gessner

I am sitting near the top of the eastern ear, or rather the eastern earlobe, of Bears Ears, the redock buttes that give our most controversial national monument its name. From up here I can look back on my starting point, the meadow far below and two miles north where a big white tent marks the social center for the reunion of five Native American tribes during the fourth annual Bears Ears Summer Gathering. Hundreds of Indigenous people, environmental organizers, and members of the media like me make up the first meeting of this sort since President Trump and Interior Secretary Ryan Zinke announced, last December, that they were going to reduce Bears Ears by 85 percent.

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Sterling College

The Top 20 Coolest Schools 2018

By Katie O'Reilly

In the 12 years since Sierra began highlighting the best environmental practices of colleges and universities, the competition to be the ecofriendliest in all of academia has gotten fierce. This year, we received a record 269 responses from qualified institutions, which now include Canadian schools and community colleges. Our annual Cool Schools Rankings assess colleges' performance in everything from what they teach to how they obtain their electricity to their sources of cafeteria food and how they manage their water. Please join Sierra in congratulating the very green—and diverse—schools that are mastering the art and science of campus sustainability.

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Adventure
Aaron Teasdale

The One Thing Better Than Summer Skiing

By Aaron Teasdale

"There's snow up here, I promise," I assure my son Jonah, as we grunt up a south-facing mountainside in Glacier National Park in July. A mountain goat cocks its head as if to say, "What kind of crazy people hike up bare mountains in ski boots?" He's not the only one to wonder what in the name of Bode Miller we're doing up here with ski gear.

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Irma Omerhodzic

Climate Defenders Mobilizing for 3rd People’s Climate March

By Alison Cagle

Call it the "People's Climate March, Part III." On Saturday, Sept. 8, thousands of people are expected to converge on the streets of San Francisco to demand that government leaders commit to ending all new fossil fuel projects and accelerating the move toward renewable energy. The march is part of a global campaign calling for environmental justice and a "just transition" to renewable energy that protects workers and frontline communities. Satellite events will happen across the U.S. and around the world, including Indonesia, Turkey, Nigeria and the United Kingdom, among other places.

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Health
Supersmario / iStock

A Toxin in Every Household

By Alison Cagle

When was the last time you looked around your kitchen or bathroom for chemicals that are toxic to your health? In many households, those chemicals don't just come in the form of liquid products like pesticides or bleach. They often can be found in the most common items lying around, like frying pans used to cook up a morning egg, or in that popcorn bag heating up in the microwave. That's because a class of highly toxic, long-lasting chemicals called perfluoroalkyl substances (PFAS) has become ubiquitous in American products.

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The Perseid meteors shower shot In Aug. 12, 2016, in Inner Mongolia China. Bjdlzx / Getty Images

August Astronomical Highlights: Summer’s Best Meteor Shower

By Kelly Kizer Whitt

August is the time to sit back, relax and enjoy the free show overhead.

The Perseid meteor shower is one of the most prolific annual meteor showers and the only one that occurs in the summer. The Perseids can produce up to 100 meteors an hour at their peak, which is around Aug. 11/12. Skies will be nice and dark thanks to a new moon on Aug. 11, which will make it easier to see even the faintest streaks. Find a location away from trees, buildings and light pollution, and look up to catch the fast-moving meteors as they burn up upon contact with our atmosphere. These meteors come from the Great Comet of 1862, Comet 109P/Swift-Tuttle.

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Health
iStock / Getty Images

Antibiotic-Resistant Genes Are Airborne, Exposing Millions

By Jonathan Hahn

In 1991, the Bay Area Air Quality Management District launched a Spare the Air program to keep residents in the San Francisco Bay Area informed of high ozone-level days, when air is smoggy and exposure to poor air quality poses health risks. Now, the air district might need to update its alert system for something other than just ozone: antibiotic-resistant genes (ARGs).

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