Krishneel Nair from Suva wants to know: How do plants defy gravity?
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China is now the third biggest arms exporter after the US and Russia according to the Stockholm International Peace Research Institute (SIPRI). Sudan is one of China's main clients in Africa.
Abhay Pant from India asked this question. And here is Dr. Carsten Lekutat’s reply on his video blog.
Five men have been detained for questioning in relation to the gang rape of an elderly nun in India. The attack has prompted India's prime minister to promise a crackdown on religious violence.