Why lead is dangerous, and the damage it does
Nuclear weapons and Iran's uranium enrichment program: 4 questions answered
Facebook doesn't fool me – but I worry about how it affects you
Artificial intelligence will make you smarter
Transgender and non-binary people face health care discrimination every day in the US
Don't stress about what kind of Christmas tree to buy, but reuse artificial trees and compost...
Time travel is possible – but only if you have an object with infinite mass
You may not even need a telescope to see Comet 46P/Wirtanen in the night sky this month
A vaccine that could block mosquitoes from transmitting malaria
Racial and ethnic minorities are more vulnerable to wildfires
How the ‘wave of women’ entering congress could turn the #MeToo movement into concrete action
Experiments with optical tweezers race to test the laws of quantum mechanics
Fighting another war: How many military personnel and veterans will have PTSD in 2025?
Traveling through time in unconventional spaces with Miami Motel Stories: MiMo
How many women does it take to change a broken Congress?
Why Google's employees walked out and what it could mean for the future of labor
New findings on ocean warming: 5 questions answered
How safe is your place of worship?
Campaign spending isn't the problem – where the money comes from is
Religion and refugees are deeply entwined in the US