Nature’s Own Holiday Light ShowThe spectacular glowing green of the Northern Lights is caused by charged particles from the solar wind interacting with gas molecules, atoms, and ions in the atmosphere. Protons and electrons streaming from the sun follow the Earth’s magnetic field lines, accelerating down towards the poles. The aurora process is similar to a neon sign—the charged particles excite atmospheric gas, causing it to emit light.
Don Hampton, research associate professor in the Geophysical Institute of the University of Alaska in Fairbanks, explains how the aurora borealis forms, what accou….
Relearning The Star Stories Of Indigenous People
In 2012, the Obama administration projected that the United States would need to add an additional 1 million college graduates in STEM fields per year for the next ten years to keep up with projected growth in the need for science and technology expertise. At the same time, though, native Americans and other Indigenous groups are underrepresented in the sciences, making up only 0.2% of the STEM workforce in 2014, despite being
2% of the total population
of the United States. Why are Indigenous people still underrepresented in science?
Ira speaks with astrophysicist Annette Lee and ant…