Claims that Facebook deliberately manipulated stories on its list of trending topics undercuts its role as one of the world’s most powerful tools for 21st century communication, writes Callie Crossley.
The news is full of viruses these days, from Ebola and West Nile to electronic versions that let hackers steal identities and credit card information from major retail stores. But is the comparison between computer viruses and biological viruses even useful anymore?
For the first time, the US Navy has deployed a laser weapon on the high seas, ready to fry any drones or speedboats that might dare to attack. It's still a prototype for now, but it could be a first step in a new, lethal — and relatively cheap — era of naval combat.
Wind and solar power have the potential to reduce the growth of greenhouse gases and slow the progression of climate change. But since the sun doesn’t always shine and the wind doesn’t always blow, the big hurdle in expanding the use of renewables is the lack of cheap and efficient storage of that energy. That could be about to change.