The Manhattan of today, a narrow island no more than 12 blocks wide, brims with 1.6 million people who journey in cars, buses, and trains through valleys of steel, glass, and concrete.
Nanoparticles engineered in laboratories have become ubiquitous—in ultralight bicycle frames, antiwrinkle creams, iPhones, silver-infused antimicrobial clothing, and other everyday products.
In an effort to assuage public discontent over environmental problems and to meet new targets for limiting pollution, China’s Ministry of Environmental Protection has put into effect national regulations allowing ordinary citizens access to national and local government environmental records.
In the carbon cycle, it's not just about the individual tree-the entire forest plays a role. Leaves take in carbon dioxide, converting it to sugar, which is carbon-based. Some of the sugar is used immediately for energy, converted back to CO2, and released into the atmosphere. The rest is stored in living wood or dead matter, such as fallen leaves and branches. Old-growth forests, in particular, store vast amounts of carbon while continuing to absorb CO2.