Saturday Citations: Rising probability of an asteroid strike; rainforest resilience; animal consciousness

Saturday Citations: Rising probability of an asteroid strike; rainforest resilience; animal consciousness

This week, University of Ferrerra researchers reported on the evolution of European skin, eye and hair pigmentation over the last 45,000 years. A re-examination of Galileo space probe data strongly suggests that Callisto has a subsurface ocean. And a two-dimensional carbon material is reportedly tougher than graphene and resists cracking.