Scientific American: Bangladesh may be Mother Nature’s punching bag, but in the battle for survival against climate change, this tiny, riverine nation isn’t going down without a fight. Already, Bangladesh has invested 10 million taka, the equivalent of about $150,000, to build cyclone shelters and create a storm early-warning system. Earlier this year, it allocated another $50 million to the country’s agriculture and health budgets to help "climate-proof" certain development sectors. The nation’s …