Why do astronauts get "space anemia"? This study has an answer.
The world-first study found that more than 3 million red blood cells were killed a second in space, compared to just 2 million on Earth.
Science
Bald eagle population growth stunted by lead poisoning, study finds
A study found the birds are eating hunters' gunshot ammunition, decreasing their population growth by 4 to 6%.
2021 was one of the hottest years on record
A new report from scientists at NOAA says the Earth simmered to its sixth hottest year on record in 2021. It was also the third costliest year ever for extreme weather disasters. NOAA's Russell Vose joins CBSN to discuss the findings.
Al Gore on climate change: "Stop using the sky as an open sewer"
U.S. greenhouse gas emissions, which are helping warm the planet, increased by 6.2% in 2021.
Al Gore on the "State of the Planet"
Former Vice President Al Gore admits he still hasn't completely gotten the message of his film, "An Inconvenient Truth," across, but he is hopeful for the future, mostly because of the energy in the streets by young people protesting climate inaction by world leaders. Ben Tracy spoke to Gore.
Experimental vaccine may block effects of opioids
An experimental vaccine could help fight the nation's opioid epidemic. Nearly 1 million Americans have died from drug overdoses in the last two decades, with more than 70% of them involving opioids. Dr. Jon LaPook takes a look.
Theranos chief scientist's widow speaks out
Rochelle Gibbons is the widow of former Theranos chief scientist Ian Gibbons, who committed suicide in 2013. Gibbons is now speaking out in her first broadcast TV interview, following the conviction of Theranos founder and CEO Elizabeth Holmes on fraud and conspiracy charges. Anna Werner reports.
"More disasters" possible after cliff collapse kills 10 tourists, expert warns
Global warming is provoking an ever greater number of natural disasters, says meteorologist Estael Sias.
Could common colds hold the key to variant-proof COVID vaccines?
T-cells generated as part of the body's natural immune response to the common cold may help protect against serious illness from COVID-19.
Ancient "sea dragon" fossil discovered in UK
Paleontologists have made a massive discovery in the United Kingdom's smallest county — the 180-million-year-old fossilized remains of a giant Jurassic "sea dragon."
HHS freezes all child care payments to Minnesota after viral fraud allegations
The Department of Health and Human Services says it has frozen federal child care funding for the state of Minnesota, citing viral fraud allegations.
Tatiana Schlossberg, granddaughter of JFK, dies at 35
Tatiana Schlossberg, the granddaughter of late President John F. Kennedy, has died after announcing a terminal cancer diagnosis in late November.
Court order suggests officials pushed to prosecute Abrego Garcia after deportation
A court order suggests the Trump administration pushed to prosecute Kilmar Abrego Garcia only after he challenged his deportation, with one top DOJ official calling it a "top priority."
Flu cases spiking this holiday season, CDC data shows
The Centers for Disease Control and Prevention says 32 jurisdictions are showing "high" or "very high" levels of flu.
Trump issues his first vetoes of this term
President Trump used his veto power this week for the first time since returning to the White House, rejecting a pair of bills linked to a Colorado water pipeline and a tribal village in the Everglades.
Body found amid search for missing Texas teen Camila Mendoza Olmos
The body has not yet been identified, Texas officials said at a Tuesday news conference.
Ben Nighthorse Campbell, former senator and Northern Cheyenne tribe member, dies at 92
Former Sen. Ben Nighthorse Campbell, a Northern Cheyenne tribal chief who became a prominent American politician, has died.
Patriots receiver Stefon Diggs denies charges of strangulation, assault and battery
Stefon Diggs, a star wide receiver with the New England Patriots, is facing criminal charges after an incident in Massachusetts earlier this month.
1 killed, dozens injured in head-on train collision near Peru's Machu Picchu
The head-on collision occurred between two trains on the line that services the historic Peruvian site Machu Picchu.