Inside race to track highly-contagious Covid variants

UP NEXT
Teen and friends shave their heads to support mother battling cancer
02:51
New technology creates AI romantic partners for users
03:15
Parts of Florida under flood alert as Arlene brings heavy wind and rain
01:32
Federal judge declares Tennessee drag restriction law unconstitutional
01:44
Suspect in disappearance of Natalee Holloway to be extradited to U.S.
01:29
Republican presidential candidates kicking off campaigns in Iowa
02:02
Chinese warship has close call with American destroyer in Taiwan Strait
01:36
Nearly 300 people dead after passenger trains crash in India
01:40
Celebrating the class of 2023
04:15
Texas slammed with severe weather and tornadoes
01:51
Family reunited after car was stolen with two-year-old child inside
01:23
New details on days leading up to Jeffrey Epstein’s death revealed
02:32
Over 100 people dead after catastrophic train derailment in India
01:04
Apartment building in New Haven collapsed, injuring eight construction workers
01:39
Biden addresses nation after passage of debt ceiling agreement
01:53
Amazon agrees to pay more than $30 million for alleged privacy violations
01:36
Out-of-control wildfires scorching Nova Scotia
01:23
Tourists getting too close to wildlife in national parks, experts say
01:25
Companies under fire as Pride Month kicks off
01:57
Special counsel has recording of Trump discussing classified document: source
02:28

UP NEXT
Teen and friends shave their heads to support mother battling cancer
02:51
New technology creates AI romantic partners for users
03:15
Parts of Florida under flood alert as Arlene brings heavy wind and rain
01:32
Federal judge declares Tennessee drag restriction law unconstitutional
01:44
Suspect in disappearance of Natalee Holloway to be extradited to U.S.
01:29
Republican presidential candidates kicking off campaigns in Iowa
02:02