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  New solar-cell efficiency Bloger
Here's a seemingly simple solar power fact: the sun bathes Earth with enough energy in one hour (4.3 x 1020 joules) to more than fill all of humanity's present energy use in a year (4.1 x 1020 joules). So how to convert it? In the world of solar energy...

Overview: Our basic research goal is to observe and study the internal structure and composition of white dwarf stars, the remnants of a nuclear fusion furnace that once turned hydrogen into helium and energy, a process which still powers stars like...

  Engineer Lessons Bloger.
There has always been a need to efficiently carry more people and more cargo. And so the science and engineering of getting large aircraft off the ground is very well understood.But what about flight at a small scale? Say the scale of a dragonfly, a...

    Sun power sends 'high-tech dragonfly' across the US
The plane has an ultra-light, carbon frame and weighs 1585 kilos - about the same as a mid-size car. It has the wingspan of a 747 and a slender fuselage, giving it the look of a giant, high-tech dragonfly....