Growth rings on a fossil bone suggest at least one mammal ancestor gave birth to live young rather than laying eggs 236 million years ago.
Growth rings on a fossil bone suggest at least one mammal ancestor gave birth to live young rather than laying eggs 236 million years ago.
Estrogen therapy is linked to fewer signs of Alzheimer’s in the brain 
A vest tested on the Artemis I mission blocked some radiation exposure 
Too many choices complicate female frogs’ sex lives 
Newborn screening for cancer risk could save lives. Should it be done? 
Bamboo toilet paper intrigued me. Reality turned out to be messy 
The largest known galaxy is wider than 17 Milky Ways 
These mammal ancestors birthed live young far earlier than thought 
WHO chief voices concern over Trump Administration’s executive order on vaccines 
Cholera spreads across borders in West and Central Africa 
Sudan: Attacks and further displacement in Blue Nile and North Kordofan