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Solar plane lands in New York City

A solar-powered airplane finished crossing the United States on Saturday, landing in New York City after flying over the Statue of Liberty during its historic bid to circle the globe, the project team said.  The spindly, single-seat experimental aircraft, dubbed Solar Impulse 2, arrived at New York's John F. Kennedy International Airport at about 4 a.m. local time after it took off about five hours beforehand at Lehigh Valley International Airport in Pennsylvania, the team reported on the airplane's website.  Such a pleasure to land in New York! For the 14th time we celebrate sustainability," said the project's co-founder Andre Borschberg on Twitter after flying over the city and the Statue of Liberty during the 14th leg of the trip around the globe. The Swiss team flying the aircraft in a campaign to build support for clean energy technologies hopes eventually to complete its circumnavigation in Abu Dhabi, where the journey began in March 2015. The solar cr...

Key to how the group of meat-eating dinosaurs grew so huge

Scientists from the University of Edinburgh, along with US and Russian colleagues, discovered the fossilised remains of the animal in Uzbekistan.  They have named it Timurlengia.  A study of the 90-million-year-old beast suggested its ears and brain were crucial in Tyrannosaurs' dominance.  "We have a totally new species of dinosaur," explained lead researcher Dr Stephen Brusatte from the University of Edinburgh.  "It's one of the very closest cousins of T. rex, but a lot smaller - about the size of a horse.  "And it comes from the middle part of the Cretaceous period - a point where we have a huge gap in the fossil record." This "frustrating" gap has made T. rex - which was found later in the period and was up to 13m head to tail - something of an evolutionary mystery. That is what this find has helped to resolve."It has features of its bones that are also found in T. rex," said Dr Brusatte. "So this is evolving feat...

Nasa has suspended its next mission to Mars because of a fault in a key research instrument

Nasa said a problem with a seismometer provided by the French space agency meant the launch could not go ahead.  It is feared the mission could now face a two-year delay.  The InSight spacecraft was scheduled to take off between 4-30 March and land on the Red Planet six months later to examine Mars' geology in depth.  Nasa said it had decided to call off the launch because the agency was unable to fix a leak affecting the seismometer, which required a vacuum seal to cope with harsh conditions on Mars.  The instrument is designed to measure ground movements. "A decision on a path forward will be made in the coming months, but one thing is clear: Nasa remains fully committed to the scientific discovery and exploration of Mars," Nasa's John Grunsfeld was quoted as saying by the AFP news agency. The next time the earth and Mars are favourably aligned for a launch will be in 2018.  The mission is also intended to monitor the temperature on Mars, as wel...