Jawaan!

Scientist Tries to Connect Migration Dots of Ancient Southwest Steve Lekson offers a kind of unified theory of the Native American population movements that have puzzled Southwest archaeologists for many years. As one site was abandoned, because of drought, violence, environmental degradation — the reasons are obscure — the leaders led an exodus to a new location: sometimes north, sometimes south, but hewing as closely as they could to the 108th meridian.   Mars Was Life-Friendly More Recently than Thought Warm weather near the Martian equator may have melted the ice in ice-rich soils as recently as 2 million years ago, according to a paper published yesterday in “Earth and Planetary Science Letters.” This indicates that the Red Planet was warmer and more life-friendly much later in its history than previous studies show

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The Daily Flash -Eco, Space, Tech (7/1)