HumansFirst Americans hunted big game in Florida 14,500 years ago Tools and butchered mastodon bones challenge the idea that giant mammals went extinct soon after people first settled in the Americas 51¶¯Âþ
HealthIodine supplements might raise the UK's IQ, but jury still out An analysis of pregnant women has suggested that children's IQ would rise if mothers-to-be took iodine supplements, but others question the benefits 51¶¯Âþ