The sheer amount of debris in low-Earth orbit is tipping space dangerously close to a cascade of hazardous collisions, scientists announced at a four-day international meeting on the subject this week. And there is an "urgent need" to…

If you live along the mid-Atlantic from North Carolina to Connecticut, get ready to witness the loud and "spectacular" mating ritual of the cicadas. Photo by Michael Raupp. Sometime around Memorial Day, in the declining hours of daylight, swarms…

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