▽Nature: Science articles and news, scientific information and jobs: nature journal ●02/05 13:53 Exclusive: how NSF is scouring research grants for violations of Trump’s ordersThe US National Science Foundation has unfrozen grant funding, but it continues to scrutinize research projects, sowing turmoil.The science behind the first pig-organ transplant trial in humansThe small trial will help to establish whether kidneys from genetically modified pigs can be transplanted into people safely