A new member in AIE family

Three molecules based on tetraphenyl-1,3-butadienes (TPBs) showed aggregation-induced emission (AIE) characteristics and sensitive conformational properties in which the emission wavelengths could be changed in different ...

US court weighs if climate change violates children's rights

In a courtroom packed with environmental activists, federal judges wrestled Tuesday with whether climate change violates the constitutional rights of young people who have sued the U.S. government over the use of fossil fuels.

Flying focus: Controlling lasers through time and space

Scientists have produced an extremely bright spot of light that can travel at any speed—including faster than the speed of light. Researchers have found a way to use this concept, called "flying focus," to move an intense ...

Law and society rely upon a 'Republic of Belief'

In developed and less developed countries alike, many worry about why laws are so often ignored. But there's a converse question that is even more puzzling: Why are laws obeyed at all?

Image: The moon in 1992

The moon was a focal point for NASA in 2017, whether it was blocking out the sun during one of the most-viewed events in U.S. history, or reinvigorating the agency's human space exploration plans. But the moon has always ...

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