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Tag: science
Great Lakes: 20% of the world’s surface freshwater
Along America's northern frontier sprawls an aquatic kingdom spanning 94,600 square miles - the largest surface freshwater system on Earth. Encompassing Lakes Superior, Huron, Michigan, Erie and Ontario, this watery realm contains over 117 trillion gallons supplying 40 million people while supporting economies from Canada to Minnesota to New York.
Caffeine: The Natural Pesticide
That morning cup of coffee jumpstarting your workday also traces back to compounds plants employ in their own daily battles - as stealth pesticides. The caffeine enriching popular beverages actually helps vegetation fend off hungry insects and destructive infestations.
Why Lemons float, but Limes sink
At first glance, lemons and limes appear quite similar - two bright green citrus fruits packing a tart, zesty bite. Their flavors infuse countless refreshing foods and drinks from sorbets to cocktails. Yet subtle differences set them deliciously apart beyond simply swirling yellow and green.
Everyone’s tongueprint is unique to them
In a future not so far off, your smartphone, computer, or front door may feature advanced biometric security to confirm your identity before granting access. But rather than pressing a finger or peering into a retinal scanner, authenticating yourself could one day be as easy as sticking out your tongue!
Why does this animal have rectangular pupils?
Out on the rugged rangelands, a herd of vigilant goats monitors the scrubby hills for any lurking threats. Suddenly, a mountain lion explodes from cover. But using their unique rectangular pupils, the goats detected the hunter before its lethal rush. Now the herd scrambles away using vision uniquely adapted to escape predators and navigate rocky slopes at speed.
Kevlar Was Originally Made for Car Tires
In a Delaware laboratory one fateful afternoon in 1965, a young chemist noticed something peculiar. A batch of polymers emerged from solution runny instead of syrupy, unlike the typical experimental output. Though colleagues advised discarding the apparent failure, Stephanie Kwolek instead saw promise in this cloudy concoction’s curious qualities.
