Black Friday: Why We Love Deals
The limited-time-only nature of Black Friday triggers an innate fear of scarcity that drives people to buy, buy, buy. Psychologists say bargains appeal to human nature.
For many families, it's a Thanksgiving tradition as rich as turkey stuffing or pumpkin pie: Rise before the crack of dawn the morning after the holiday, wait for the mall to open, and start hunting down Black Friday bargains. ... The Black Friday crush isn't for everyone, but the allure of a bargain speaks to human nature, consumer psychologists say. The limited-time-only nature of Black Friday triggers an innate fear of scarcity that drives people to buy, buy, buy. As long as these tactics aren't overused, marketing experts say, they can be very effective in luring holiday shoppers to the cash register with cartfuls of goodies.
Here's the science of black holes, from supermassive monsters to ones the size of ping-pong balls.
- There's more than one way to make a black hole, says NASA's Michelle Thaller. They're not always formed from dead stars. For example, there are teeny tiny black holes all around us, the result of high-energy cosmic rays slamming into our atmosphere with enough force to cram matter together so densely that no light can escape.
- CERN is trying to create artificial black holes right now, but don't worry, it's not dangerous. Scientists there are attempting to smash two particles together with such intensity that it creates a black hole that would live for just a millionth of a second.
- Thaller uses a brilliant analogy involving a rubber sheet, a marble, and an elephant to explain why different black holes have varying densities. Watch and learn!
- Bonus fact: If the Earth became a black hole, it would be crushed to the size of a ping-pong ball.
Protected animals are feared to be headed for the black market.
In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.
- The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
- Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
- Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
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