Animals

Clues in woolly mammoth tusk reveal a lifetime of travels
Baby mice “dream” about the world before seeing it
FDA approves first drug to treat lymphoma in dogs
Lab-grown foie gras eliminates force-feeding
CRISPR used to create first gene-edited opossums
How robots could end animal captivity in zoos and marine parks
Rarely seen glass octopus caught on film
Goats are helping California battle wildfires
Castration linked to younger DNA and biological age
Should a herd of captive elephants be released into the wild?