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Two images from Perseverance show coarse sediment grains and cobbles in Skrinkle Haven and Pinestand. Is this evidence of an ancient river on Mars?
Perseverance is exploring the top of a fan-shaped pile of sedimentary rock that stands 250 metres tall and features curving layers suggestive of flowing water.Stit
Next week’s Allegheny County and Pittsburgh elections mark a coming of age for progressives (no matter how things turn out).
Allegheny County executive candidates — and groups aggressively campaigning on behalf of some of them — are making their closing arguments to voters with less than a week to go until Tuesday’s primary. State Rep. Sara Innamorato, D-Lawrenceville, has appeared to gain some momentum, with a recent poll showing her
Images transmitted to Earth from NASA's Perseverance rover may show evidence that ancient rivers that once flowed over the planet ran much deeper, and flowed much faster, than researchers previously thought.