News
- Health & Medicine
Dengue is classified as an urban disease. Mosquitoes don’t care
Infectious diseases are often labeled “urban” or “rural.” Applying political labels to public health misses who is at risk, experts argue.
- Health & Medicine
Refurbished heart pacemakers work like new
“Old” pacemakers may still work for years, so doctors are refurbishing used devices and donating them to patients in low- and middle-income countries.
- Archaeology
Ancient Central Americans built a massive fish-trapping system
Earthen channels directed fish into ponds that formed seasonally, providing a dietary bounty for Maya civilizations starting around 4,000 years ago.
- Climate
Satellite space junk might wreak havoc on the stratosphere
Hundreds of defunct satellites plunge toward Earth every year.
