August 19 - The number of coastal areas known as dead zones is on the rise. A new study published in Science counted more than 400 dead zones globally, including 166 in U.S. waters, covering 245,000 square kilometers. Once filled with fish and many other organisms, these ocean waters are no longer habitable.

August 15 - On July 29, 1958, nine months after the launch of the Soviet Sputnik satellite sparked concern that the U.S. was falling behind in technology, President Dwight D. Eisenhower signed the National Aeronautics and Space Act into law. The act authorized the creation and funding of a civilian agency that would direct and conduct civil aeronautics and space research and programs. Three months later on October 1, NASA opened its doors.

August 1 - The U.S. Centers for Disease Control and Prevention recognize August as National Immunization Awareness Month. Immunization, noted as one of the most significant health interventions of the 20th century, has helped eradicate smallpox worldwide, virtually eliminated polio from this hemisphere, and significantly reduced the occurrence of measles, diphtheria, rubella, pertussis, and other diseases in the U.S. While many people are routinely immunized, there are still tens of thousands of deaths around the world caused by vaccine-preventable diseases.

July 25 - Texas utility regulators announced the largest renewable-energy investment in the U.S. when they recently approved a $4.9 billion plan that will build extensive transmission lines to carry wind-generated electricity from remote western parts of the state to urban centers like Dallas, Houston, Austin, and San Antonio.

July 18 - Mayor Michael Bloomberg of New York City has announced the implementation of an alternative to the current poverty measure. It will be the first time any local government has reformulated the nation's 40-year-old standard for determining poverty levels, which is based primarily on food expenditures.