For many years, transportation has been a major source of the world’s pollution, but today increasing strides are being made toward finding clean, renewable fuels and greater fuel efficiencies. An ambitious breeding program seeks to re-wild rare South China Tigers. Sculptures made of trash surprise on-lookers in Rome. Each year 2 million people die in Africa from drinking contaminated water and some 40 billion hours are spent seeking and collecting water, often by children. Elsewhere, waterways are getting sick from the prescription drugs finding their way into the water supply. A healthy and frisky spectacled bear was born at the Buenos Aires Zoo. Irregular rainfall is threatening Sri Lanka’s Sinharaja rain forest. A tourism boom in the Galapagos Islands has many worried about the fragile balance of the archipelago’s fabled ecosystem.