Research team describes the composition of asteroid Phaethon

Asteroid Phaethon, which is five kilometers in diameter, has been puzzling researchers for a long time. A comet-like tail is visible for a few days when the asteroid passes closest to the sun during its orbit.

Three positive climate developments

While humanity's efforts to curb planet-warming emissions are nowhere near enough to avoid heating the world to catastrophic levels, tentative improvements show that progress is possible.

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