How Will We Know When We Reach Herd Immunity?
Wearing masks will be a necessary safety measure for many months to come.
The Zoo Industry Continues to Struggle
Signage for the London Zoo
Scientists Have New Theory for What Killed the Dinosaurs
A comet in the night sky
The Future of Online Learning for Higher Education
A university student watches an online lecture
Mekong River Drops to ‘Worrying’ Levels
Mekong river bordering Thailand and Laos
COVID-19 Vaccines Might Be Changed to Fight New Versions of Virus
Vaccination programs are in full swing.
A Glimpse into Ice Age History
Ancient mammoth tooth
A Favorite Winter Activity for the Dutch
People ice skate on a canal in Amsterdam, Netherlands
US Needs to Do More to Prepare for Dangerous Weather, Experts Say
Many states are experiencing extreme weather.
Boeing Tells Airlines to Ground 777 Aircraft
A single Boeing 777 engine