Epidemiologist Brandon Brown answers this and other new COVID-19 questions.

‘Stunning to see with your own eyes,’ says UCLA neuroscientist Martin Monti.

Researchers are developing a color-changing test strip to detect SARS-CoV-2 in a mask wearer’s breath or saliva.

Despite massive disruptions caused by the global pandemic, UC made significant progress in its efforts to combat climate change and build resilience across its campuses.

Health experts offer their view of the path ahead.

The test kit uses a simple nasal swab to return results in 30 minutes, anywhere, any time.

Bee researchers at four UC campuses will try to reverse the worldwide decline of this key pollinator, thanks to a new grant from the UC Office of the President.

Age at first use and number of tobacco products consumed also increases addiction risk.

Focusing on what you get right, instead of what you get wrong, can help your judgment if anxious or depressed, a new study says.

An astrophysicist faces the universe’s darkness with help from those around her and from the stars above her.

A global team of scientists suggests extraordinary action on sustainability is necessary soon to avoid a dark future.

UCSF infectious disease expert Charles Chiu on how the new variant emerged, whether available vaccines will still work and what we need to do now.