News tagged with crystals

Earth's core reveals an inner weakness

(Phys.org) —The word "core" conjures up an image of something strong. However, new experiments show that the iron found in the Earth's core is relatively weak. This finding is based on x-ray spectroscopy ...

Jan 27, 2014
4.8 / 5 (19) 0 | with audio podcast

How do bacteria repair damage from the sun?

(Phys.org) —From bacteria to plants to humans, all organisms have mechanisms that they use to repair DNA damaged by ultraviolet (UV) light. This fundamental maintenance function is critical to our health ...

Jan 24, 2014
4.1 / 5 (8) 0 | with audio podcast

Snow falls differently on the nanoscale

This time of year it's not hard to imagine the world buried under a smooth blanket of snow. A picnic table on a flat lawn eventually vanishes as trillions of snowflakes collect around it, a crystalline sheet ...

Jan 24, 2014
5 / 5 (6) 0 | with audio podcast

Electric-blue clouds appear over Antarctica

Data from NASA's AIM spacecraft show that noctilucent clouds are like a great "geophysical light bulb." They turn on every year in late spring, reaching almost full intensity over a period of no more than ...

Dec 24, 2013
4.4 / 5 (14) 0 | with audio podcast

Why it snows so much in the frozen North

(Phys.org) —When it doesn't show signs of stopping, most of us just mumble a few choice words and get out the snow shovel. Scientists, however, wonder where all that snow is coming from, particularly in ...

Dec 23, 2013
4.4 / 5 (18) 12 | with audio podcast