Today, most of us think of Darwin in terms of evolution (this actually came much later in his career) and perhaps also the Galapagos Islands.
For drama, you can’t beat that one explanation of the K/T extinction: A giant asteroid smacks into the Gulf of Mexico, causing the equivalent of
How’s this for a science fiction premise: In outer space, humanity finds a precious metal that also cures cancer and solves Earth’s pollution problems.
NASA plans to catch an asteroid and tow it into orbit around the Moon. Whatever for? What are asteroids anyway? Won’t it crash into
What is salt? There are many ionic salts. What we think of as table or road salt is an ionic salt called sodium chloride
Charles Lyell, a British lawyer turned geologist, was the first prominent Western thinker to establish that small geologic processes (like rainfall) accomplish big things