The New & Improved Invisibility Cloak
An "invisibility cloak" that's able to hide items thousands of times larger than before now exists, scientists say. The cloak works by wrapping light around an object.
In 2010, scientists created the first cloak that worked for three-dimensional objects against light nearly visible to humans. Still, the cloaked area was only 30 microns wide, or about one-third the width of a human hair. Now researchers have developed a cloak that can hide three-dimensional objects against red and green lasers and ordinary white light. Although the cloaked region they demonstrated is only three-quarters of an inch wide, "there is actually no limit on the size of the cloak," researcher Shuang Zhang, a physicist at the University of Birmingham in England, told LiveScience.
Many governments do not report, or misreport, the numbers of refugees who enter their country.
Controversial map names CEOs of 100 companies producing 71 percent of the world's greenhouse gas emissions.
- Just 100 companies produce 71 percent of the world's greenhouse gases.
- This map lists their names and locations, and their CEOs.
- The climate crisis may be too complex for these 100 people to solve, but naming and shaming them is a good start.
Bernie Sanders reveals an even bigger plan than Elizabeth Warren, but does it go too far?
- Bernie Sanders has released a plan to forgive all the student debt in the country.
- It is even larger than the plan Elizabeth Warren put forward two months ago.
- The plan has drawn criticism for forgiving the debt of both the poor and those well off enough to pay their own debt.
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