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Trucks line up to load and unload at the Port of Los Angeles in Long Beach, California. Genaro Molina/Los Angeles Times via Getty Images

Beyond passenger cars and pickups: 5 questions answered about electrifying trucks

As California goes on regulating air pollution, other states often follow – including the Golden State’s ambitious goals for cleaning up emissions from trucking.
Scientists have used author Henry David Thoreau’s notes to inform studies of climate change in eastern Massachusetts. Tom Stohlman/Flickr

By fact-checking Thoreau’s observations at Walden Pond, we showed how old diaries and specimens can inform modern research

Journals, museum collections and other historical sources can provide valuable data for modern ecological studies. But just because a source is old doesn’t make it useful.
Population growth fuels knowledge, leading to new technology and energy use, fueling more population growth. Robert Essel/The Image Bank via Getty Images

8 billion humans: How population growth and climate change are connected as the ‘Anthropocene engine’ transforms the planet

The UN estimates the global population will pass 8 billion people on Nov. 15, 2022. From the Stone Age to today, here’s how things spiraled out of control.
Marcin Jozwiak/Unsplash

Global carbon emissions at record levels with no signs of shrinking, new data shows. Humanity has a monumental task ahead

At current levels of emissions, there is a 50% chance the planet will reach the 1.5℃ global average temperature rise in just nine years.
A Long Island Power Authority smart meter installed at a home in Suffolk County, N.Y. John Paraskevas/Newsday RM via Getty Images

Smart meters and dynamic pricing can help consumers use electricity when it’s less costly, saving money and reducing pollution

Most households pay a flat rate 24/7 for electricity although the cost of generating it fluctuates through the day. Wireless technologies are changing that system.