Enviorise.com When most people think about global warming they think about melting ice caps and polar bears running out of ice. While those may be real environmental issues, the real problems will result from rising sea levels that could create nightmare situations for many people living on or near the world’s coasts. Hurricanes will increase in number and inflict more damage, and entire villages, towns, cities, and mega-cities might be forced to migrate to higher ground or become environmental refugees.