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During deep sleep, waves of cerebrospinal fluid (blue) coincide with temporary decreases in blood flow (red). Less blood in the brain means more room for the fluid to carry away toxins, including those associated with Alzheimer's disease.

How Deep Sleep May Help The Brain Clear Alzheimer's Toxins

A study of 11 sleeping brains sheds some light on the mysterious link between sleep problems and Alzheimer's disease. The flow of cerebrospinal fluid through the brain appears to be the key.

This Oct. 21, 2009, file photo shows ladybugs on a vehicle in Chatham, Ill.

Massive Ladybug Swarm Over San Diego, SoCal Shows Up On Radar

A huge blob that appeared on the National Weather Service's radar wasn't a rain cloud, but a massive swarm of ladybugs over Southern California.

Aedes aegypti mosquitoes infected with the Wolbachia bacterium, which appears to block transmission of dengue fever and other mosquito-borne viruses.

Infecting Mosquitoes With Bacteria Could Have A Big Payoff

Scientists are trying to flip the script on control of mosquitoes in an effort to combat dengue fever. Instead of trying to wipe them out, they're infecting them with bacteria.

The top science adviser to the EPA, Michael Honeycutt, has been the lead toxicologist for the state of Texas since 2003. Texas cities, including Houston, have struggled for decades with some of the worst air quality in the country.

Top EPA Science Adviser Has History Of Questioning Pollution Research

Michael Honeycutt, the top toxicologist for Texas, is the latest chair of the EPA's science advisory board. But some scientists warn his views align more with industry than with scientific consensus.

A poster from the Climate Science Alliance with 10 things everyone can do to help mitigate climate change in San Diego.

10 Things We All Can Do To Help Mitigate Climate Change In San Diego

News about climate change can make people feel helpless. But there are researchers in San Diego working on ways for communities to mitigate the effects of climate change in their own backyards.

The winners of the 2019 Nobel Prize in physiology or medicine are Gregg Semenza of the U.S., Peter Ratcliffe of Britain and William Kaelin of the U.S. They're seen here on a screen during a news conference at the Karolinska Institute in Stockholm.

Trio Wins Nobel Prize In Physiology Or Medicine For Work On Cells And Oxygen

The three physicians "found the molecular switch that regulates how our cells adapt when oxygen levels drop," a member of the Nobel Committee said.

Tianjin, in northern China, is home to Tianjin University, an international research center that recently hired an American to lead its school of pharmaceutical science and technology. He recruits students from all over the world, he says, and the program's classes are taught in English.

China Expands Research Funding, Luring U.S. Scientists And Students

In a quest to rapidly advance its scientific depth and breadth, China is recruiting scientists from around the world. Some from the U.S. say the greater funding for school and research is freeing.

Dr. Nancy Jaax (Julianna Margulies) finds Dr. Peter Jahrling (Topher Grace) and shakes him awake to make sure he is OK during the Ebola investigation.

A NatGeo TV Drama Is 'Inspired' By A 1989 Ebola Crisis In The U.S. How Accurate Is It?

'The Hot Zone,' a miniseries on the National Geographic Channel, was "inspired" by a 1989 Ebola crisis in the U.S. We asked virologist Thomas Geisbert, who was on the scene.

District of Columbia Attorney General Karl Racine (left) and Texas Attorney General Ken Paxton speak Monday about the launch of an antitrust investigation into Google outside the Supreme Court in Washington, D.C.

48 States Investigating Whether Google's Dominance Hurts Competition

The top legal officials of 48 states, led by Texas Republican Attorney General Ken Paxton, announced a major investigation into Google's dominance in search and advertising.

Giant panda Gao Gao is pictured in this undated photo.

San Diego Zoo Bids Farewell To Giant Panda Gao Gao

The San Diego Zoo said goodbye Tuesday to a giant panda named Gao Gao, sending him back to his homeland as part of a research loan agreement with China.

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