Colombia: Escobar's hippos have multiplied
Wild hippos are thriving in Colombia, and they're one of Pablo Escobar's legacies.
The Iberian lynx is no longer critically endangered
Single-use masks and gloves are generating new plastic pollution
Sun dogs: a wintertime phenomenon in the sky
24 good news stories for planet
Artificial reefs to protect the ocean floor
Veggie burgers for meat eaters, Beyond Meat's success story