The fossilized gigantic footprints detected in the Arabian dessert belong to a herd of elephants, scientists say. The seven-million-year-old discovery marks the world’s oldest evidence on how these ancient mammals lived.
In what is being hailed as the oldest successful regeneration of a living plant, researchers from the Russian Academy of Sciences used cells from a 30,000-year-old plant buried in permafrost to create living seedlings.
Although the Earth's crust is still shifting, driven by the churning semimolten rock underneath it, researchers had thought the moon had cooled off much too long ago to still have any such tectonic activity.
On Feb. 20, 1962, Glenn piloted NASA's Mercury capsule, known as Friendship 7, three times around Earth, matching the groundbreaking achievement of the rival Soviet Union, which launched cosmonaut Yuri Gagarin into orbit 10 months earlier.
Scientists recently discovered four new species of chameleons in Madagascar. One of them – Brookesia micra – is the smallest chameleon in the world. This species may have evolved through a phenomenon known as island dwarfism.