The experts can study the atmosphere of planets located outside the Solar System and can detect the presence of methane or oxygen, which in turn might be a product of microbes or intelligent forms of life.
In his latest book, Across the Ravaged Land , photographer Nick Brandt tells the story of the petrified animals found around a lake in Tanzania. Lake Natron turns every animal that ends up in its waters to stone.
Do you remember the time when you were a kid and wanted to go outside - in front of the house or building and to play with the other kids? It was as if nothing else existed back then but the desire to play and heaps of energy.