PostsCommentsPayoutsivangav (18)in #undefined • 6 years agoSolar sails for NASAResearchers is taking solar sailing to the next level with advanced photonic materials. This new class of materials…ivangav (18)in #undefined • 6 years agoFentanyl and cocaine deaths continue to rise in England and WalesDeaths involving powerful painkiller fentanyl have risen by almost a third, official figures show. There were 75…