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Young boys in Beijing check a smartphone in front of their home, near a coal-fired power plant. As China's economy slowed in 2015, its industrial use of coal likely dropped, too, researchers say. That may be behind the slight drop in global CO2 emissions.

Small, Surprising Dip In World's Carbon Emissions Traced To China

Climate scientists say global emissions of carbon dioxide seems to have dipped a bit in 2015, though the world economy is still growing. China's reduced use of coal may be the main reason.

Data collected between Nov. 17-28 by NASA's Aeronomy of Ice in the Mesosphere, or AIM, spacecraft Antarctica covered in glowing electric blue due to the start of noctilucent, or night-shining, cloud season.

The Electric Blue Polar Cloud Season Came Early This Year

Noctilucent clouds, high-altitude clouds that appear to glow in the sky at night, usually show up in the Southern Hemisphere summer. Satellite images showed them covering Antarctica in early November.

Texas Bufkin Christian Academy, a private, for-profit religious primary school in Milwaukee, is the lowest-performing voucher school in the city, state officials say.

Lessons From The Nation's Oldest Voucher Program

Milwaukee's voucher program serves some 28,000 students. Most of them are African-American and come from low-income families.

The USS Carl Vinson, seen here earlier this month, is taking part in exercises with Japanese ships in the Philippine Sea.

North Korea Threatens To Sink U.S. Carrier; China Urges Restraint

North Korea is threatening to sink a U.S. Navy strike group that is led by the USS Carl Vinson aircraft carrier. The regime has also reportedly detained a U.S. citizen.

The official Twitter account of Badlands National Park in South Dakota was the first to tweet climate change facts in defiance of the gag order placed on the Environmental Protection Agency.

Rogue National Park Accounts Emerge On Twitter Amid Social Media Gag Orders

Countering the Trump administration's restrictions on public communications, unofficial Twitter accounts for the National Park Service have been tweeting facts about climate change.

Researchers at Johns Hopkins University set out to study how infants use what they already know to motivate future learning.

Why Babies Love (And Learn From) Magic Tricks

A new study in the journal Science explores the power of surprise to motivate infant learning.

UCSD Receives Second-Highest Number Of Applications In UC System

UC San Diego topped the 100,000 mark for applications for the fall 2016 quarter, the university announced Monday. Only UCLA received more.

A tiny three-dimensional model of the human brain is seen in this fluorescent cross-section, Dec. 20, 2016.

Salk Researchers Work Toward Growing More Realistic 3D Mini-Brains

The hope is that one day, researchers could use these tiny models of the human brain to better understand how disorders like schizophrenia and autism take root during early brain development.

UC San Diego Ranked 14th Best University In The World

For the third year in a row, UCSD came in as the 14th best university in the world, according to the 2015 Academic Ranking of World Universities.

Report Finds Sharing Prescription Painkillers Is Common Practice

The sharing of prescription painkillers like Oxycontin is fairly common, according to a new study.

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