A new and contentious five-year limit for getting rid of dead satellites could slow the growing orbital litter problem—if people actually abide by it.
A Bold Effort to Cure HIV—Using Crispr
An experiment tests whether the gene-editing technology can stop the virus from replicating, which would ultimately wipe out the infection.
Scientists Have Discovered a New Set of Blood Groups
The ‘Er’ grouping could help doctors identify and treat some rare cases of blood incompatibility, including between pregnant mothers and fetuses.
The Mediterranean Sea Is So Hot, It’s Forming Carbonate Crystals
In the rapidly warming Eastern Mediterranean, water stratifies into layers, like a cake. That’s allowing carbon-spewing crystals to form.
US Cities Are Recycling Trees and Poop to Make Compost
Wood and biosolids from water treatment plants can be used to improve the soil—and keep remaining trees healthy.