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Astronomers looking at the atmosphere in neighboring Venus see something that might just be a sign of life.In a study published Monday, researchers from Cardiff University, MIT and elsewhere say they found the chemical signature of a noxious gas called phosphine.On Earth, phosphine is associated with life. It's found at the bottom of ponds, in badger guts and in penguin guano.Venus’ phosphine was observed in a narrow, temperate band within the planet’s atmospheres, where temperatures range from 30 to 200 degrees Fahrenheit. Scientists have speculated that if life exists on Venus, this layer of the atmosphere, or cloud deck, is likely the only place where it would survive, according to MIT.“This phosphine signal is perfectly positioned where others have conjectured the area could be habitable,” said the study’s co-author and EAPS Research Scientist Janusz Petkowski.Astronomers tried to figure out other, non-biological ways it could be produced and came up empty.“It’s very hard to prove a negative,” said Clara Sousa-Silva, research scientist in MIT’s Department of Earth, Atmospheric and Planetary Sciences (EAPS). “Now, astronomers will think of all the ways to justify phosphine without life, and I welcome that. Please do, because we are at the end of our possibilities to show abiotic processes that can make phosphine.”Outside experts — and the study authors themselves — say the research is tantalizing but not yet convincing. 1454

As the coronavirus continues to wreak havoc in our lives, many people are looking for ways to manage the stress that has come with it.Drink maker PepsiCo is adding to your options of stress relief aid.On Monday, the company unveiled Driftwell, a new drink designed to ease stress and help you relax.PepsiCo says the drink is loaded with an amino acid that helps with calmness, improves focus, and helps with sleep.You'll be able to get Driftwell online later this year and in stores early next year. 507

BAKERSFIELD, California — Fire crews around California are gradually getting the upper hand on wildfires that are ravaging the state.On Monday morning, CalFire updated the progress of multiple fires from around California.The Camp Fire in Butte County is now covering 151,000 and is 66 percent contained. That fire has already claimed the lives of 77 people. About 1,000 people are still unaccounted for. CalFire is reporting that 11,713 homes have been destroyed. That's up more than a 1,000 homes from Sunday's update. PHOTOS: Wildfires devastation in CaliforniaThe Woolsey Fire, burning in Ventura and Los Angeles counties, is now covering 96,949 acres and is 94 percent contained. So far three people have lost their lives in that fire.  789

ATLANTA — The United States is going to require airline travelers from Britain to get a negative COVID-19 test first. The Centers for Disease Control and Prevention announced the new policy late Thursday. Airline passengers from the United Kingdom will have to test negative for COVID-19 within three days of their flight. The requirement goes into effect Monday.The U.S. is the latest country to announce travel restrictions because of a new variant of the coronavirus that is spreading in Britain and elsewhere. The new of the virus is more contagious than other strains.The CDC said because of restrictions in place since March, air travel to the U.S. from the U.K. is down by 90%. 692

As we drive down the eerily deserted Hong Kong-Zhuhai-Macau Bridge, the murky waters of the Pearl River Delta stretch as far as the eye can see. There is no land in sight.Spanning 34 miles (55 kilometers), this is the longest sea-crossing bridge ever built. Guo Xinglin, assistant director and senior engineer at the Hong Kong-Zhuhai-Macao Bridge Authority, meets us half way along. As we are buffeted by a strong wind, the tough conditions his construction crew experienced, as they perched on precarious platforms, working miles from land and high over the water, are evident.Guo is visibly proud of his country's monumental achievement. 647