KROMDRAAI, South Africa (Reuters) – Crouched in a shallow square grid dug into the red African earth, American graduate student Sarah Edlund uses a hand brush to scrape soil into …read more Source:: UKScienceNews
KROMDRAAI, South Africa (Reuters) – Crouched in a shallow square grid dug into the red African earth, American graduate student Sarah Edlund uses a hand brush to scrape soil into …read more Source:: UKScienceNews