chemicals
A Formula For SETI
1960 AD
GREEN BANK, WEST VIRGINIA
Frank Drake, the man who conducted the first modern search for radio signals from other civilizations, developed a way of thinking about how many civilizations there could be in our galaxy. It’s now known as the Drake Equation: N = R x Fs x Fp x Ne x Fl x Fi [...]
Bald Eagle: A Hunter in the Forest
The bald eagle is a large North American bird of the forest that catches most of its meals live–including ducks, gulls, seabirds, salmon, and other fish. The bald eagle is an accomplished fisherman. It can snatch fish from the surface of the water — but with its feet rather than its hooked beak. The eagle [...]