HealthGenetically engineered bacteria could heal us from inside our cells Billions of years ago, bacteria began living inside other cells and carrying out essential functions. Genetic engineering could create new types of these ‘endosymbionts’ 51¶¯Âþ
LifeComplex social lives of orcas revealed by drone observations Killer whales tend to have close friendships with those of similar age and sex, scientists have discovered by filming them from drones 51¶¯Âþ