Science News: Inhabitants of the tropics can expect to see more severe storms if sea-surface temperatures in the region continue to rise as Earth’s climate changes. The growth of “thunderheads” — the massive and extremely tall clouds that generate the most severe thunderstorms — is driven by the rise of warm, moist air. A NASA satellite designed to monitor such deep convective clouds detects about 6,000 of them each day, says George Aumann, a climate scientist at the Jet Propulsion Laboratory in …