In our news wrap Tuesday, the path is now clear for the Paris climate change accord to take effect. It got backing from enough countries to account for 55 percent of global emissions. Also, there’s a new surge in the…
By PBS NewsHour
The 2016 Nobel Prize in physics is shared by three scientists -- David Thouless, Duncan Haldane and Michael Kosterlitz -- for theoretical discoveries of topological phase transitions and topological phases of matter. Here's what that means.
By Nsikan Akpan
The Nobel Prize in Physics was awarded Tuesday to the inventors of the blue light-emitting diode, or LED, shining a light on the creation that solved the final puzzle piece to energy-efficient lighting.
By Justin Scuiletti
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