[fatboy93]

Not sure where they got the number from, but every year the climates have become a tad more warmer with summer temperatures routinely being closer to 50C in India.

I've been hearing nearly all my life that coastal areas like Bangladesh, Mumbai, Kolkata, orissa etc are at a severe risk of drowning due to rising sea levels.

I've experienced first hand water scarcity in many parts of the country, but more prominently near the Deccan plateau due to rainfall failures and lakes, rivers drying up as a consequence of exploitation leading to crop failures.

Their 1 billion number doesn't seem too far off though if we take into account not many hospitable places have measures controlling resource usage and exploitation.