science / science - 8 hours ago
A 'devil comet' is set to swing by the sun and could be visible during the eclipse
science / science - 8 hours ago
science / science - 9 hours ago
science / science - 10 hours ago
science / science - 10 hours ago
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science / science - 20 hours ago
science / science - 20 hours ago
Even if you don’t recognize the name, you probably recognize the saguaro cactus. It’s the archetype of the cactus, a column from which protrude arms bent at right angles like elbows. As my husband pointed out, the cactus emoji is a saguaro: . In Tucson, Arizona, even the airport has a saguaro crop...