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...
A study by an international team of scientists has revealed that the primates either develop big voices, or big testes - but not both. Scientists made the discovery while trying to understand the "evolution of the animals' incredible roars". The findings suggest such evolutionary trade-offs may be more common that previously thought. They are published in the journal Current Biology.Howler monkeys are named for their impressive howling roars - sounds they make to intimidate rivals and impress potential mates. And their anatomical musical instrument is a bone in their throat called the hyoid bone, which acts as a resonator So, while their vocal folds act like the strings of an instrument, the hyoid bone is the body - and its size relates directly to the depth of their howl."Females find a deeper howl more attractive," explained lead researcher Dr Jake Dunn from the University of Cambridge. Looking at research into the different howler monkey speci...