“Exercising the brain is just as helpful as exercising the body for dogs’ welfare and happiness. Giving them stimulating toys from which they can forage food gives them a way to express natural ...
When we got together to discuss how old the Moon really was, having those multiple perspectives turned out to be crucial. How did the Moon form? At a conference in Hawaii in the late 1980s, a group of ...
A few hundred million years after its formation, the Moon may have been the scene of such immense volcanic activity that its entire crust melted several times and was completely churned through. At ...