Plan to relocate whole nation of Tuvalu
Tuvalu is home to 11,000 people
Total land area <26 sqkm
Most islands 3m above sea level
20m across at narrowest point
Scientists predict Tuvalu could be uninhabitable in the next 50-100 years
Unsuitable land for crops
Tuvalu reliant on rainwater - underwater supplies contaminated by seawater