Science Stats
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EarthEarth’s rivers cover 44 percent more land than we thought
A global survey of rivers and streams based on satellite data suggests that these waterways traverse about 773,000 square kilometers.
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AnimalsLeaf-cutter ants pick up the pace when they sense rain
Leaf-cutter ants struggle to carry wet leaves, so they run to avoid rain.
By Yao-Hua Law -
Health & MedicineBlame opioids for a fifth of young adult deaths in the United States
Of young adults aged 25 to 34 who died in 2016, 20 percent of those deaths were opioid-related.
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ClimateGlobetrotting tourists are leaving a giant carbon footprint on the Earth
Globetrotters are responsible for about 8 percent of the world’s greenhouse gas emissions.