Clay deposits on Mars have been seen as evidence that the planet once had a warm, wet climate. But a new study suggests the clay could have volcanic origins.
A study found that the types of clays found on Mars to not necessarily require Earthlike aquatic conditions.
Since water is thought to be essential for all life, the Martian clay findings complicate the question of whether early Mars was likely to have been hospitable to life.
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.
The common ancestors of humans, apes, and monkeys, might have originally arisen in Asia, a new fossil discovery in Libya suggests.