A Serial Killer Goes After Cancer

Bring it on, cancer — the doctors at the Children’s Hospital of Philadelphia are ready to kick your butt. The fact that they get teary-eyed while they’re doing it (3:07) makes me love them even more.

Parenting

Sexologist stirs debate after revealing sex education should start between 2-3 years old

Culture

High schoolers create device to keep seniors with Parkinson’s from falling, inspired by cats

Conservation

90-year-old explorer to water-bike 104 miles to save Britain’s endangered rainforest

Culture

Over 113,233 people worldwide recreate Leonardo da Vinci’s ‘The Last Supper’ in a photo mosaic