The Indian Ocean hasn’t been studied much, but it has a big impact on the world

India and Nepal are trading barbs in an escalating dispute over the failure of flood defences that left millions of people destitute.

Rains and rising floodwaters forced hundreds of thousands of people from their homes in north-eastern India and sent elephants and rhinos fleeing.

Flood victims demanding food and shelter beat up government officials in India on Friday as monsoon rains spread misery among millions of people.

Heavy monsoon rains have triggered floods across South Asia in which 147 people have been killed in the past week as the downpours swamped villages.