SpaceX Success. SpaceX on Saturday successfully launched and landed its first unmanned Falcon 9 rocket since a costly and complicated launchpad explosion in September, New York Times reports. The $ 3 billion project aims to send 81 satellites to space in the coming months.

WhatsApp Insecure. Though Facebook claimed that its WhatsApp messaging service is secure, a backdoor has been discovered over nine months ago and still hasn’t been fixed, according to The Guardian. That means that others can intercept and read encrypted messages. Hello Telegraph?

Seeing Quantum. Scientists at the University of Sydney have demonstrated the ability to "see" the future of quantum systems, and used that knowledge to preempt their demise, in a major achievement that could help bring the world of quantum technology closer to reality, WAToday reports. The applications of quantum-enabled technologies are already demonstrating significant impacts especially in sensing and metrology.

All Dutch trains run on wind. 100 percent of Dutch trains are now powered by electricity generated by wind energy, engadget reports. Some 600,000 passengers on 5,500 trains daily are "the first in the world" to travel thanks to wind energy. One windmill running for an hour can power one train across some 200 kilometres (120 miles).

No more painful tooth fillings! A new drug enhances a tooth’s natural ability to regrow and repair itself, Science reports. In tests on mice, the drug, tideglusib, successfully triggered stem cells that are located in the soft pulp center of a tooth to restore a tooth’s original dentine.