HumansThe plague may have wiped out most northern Europeans 5000 years ago DNA evidence from tombs in Sweden and Denmark suggests major plague outbreaks were responsible for the Neolithic decline in northern Europe ¿ìè¶ÌÊÓÆµ
Environment'Butter' made from CO2 could pave the way for food without farming US start-up Savor says its synthetic vegan fat, made without livestock or the crops needed for margarine, could cut carbon emissions and save rainforests ¿ìè¶ÌÊÓÆµ