Ukrainian demonstrators continue to call for a new government, despite limited pro-EU assurances from the president. The scale of the protests in Ukraine has surprised politicians and experts in both the East and West.
Lasers can cut, weld and melt a variety of materials. But, the beams of light of the future will likely look very different. They'll fire short flashes of light and do much more than today's conventional lasers.
A German team has developed a way to give LEDs, which shed bluish or cold light, a warm tone. It could revolutionize highly efficient LEDs - and it's gained them a science prize nomination.
Muna is boosting her generation by taking a new approach to news.
Learn a new, funny or quirky German word each week.