Designed to cover half the surface area of a pack, new proposed labels are meant to vividly remind smokers of tobacco’s dangers.

In San Francisco, some salons are moving to identify establishments that use a so-called toxic trio of chemicals.

The project aimed at succeeding the Hubble would need increases of more than $200 million in both 2011 and 2012 to meet at 2015 launching date, the panel’s leader says.

Dr. Siddhartha Mukherjee writes a “biography” of cancer and of those who have fought it throughout history.

A new cartoon video makes a plea for the design of electronic gadgets that last longer, have safe components and can be returned for recycling when they have outlived their usefulness.

Using statistical analysis, scientists suggested that the chances of the United States coast's being hit by a hurricane in a season this active were higher than 95 percent. But it didn't happen.

Cost and technical feasibility will be considered in requiring changes to plants' operations, the agency says.

To mark the harbor's centennial, the city issues a report detailing the evolving history of wastewater treatment and other efforts to improve its health.

Fishes take center stage in a presentation on biodiversity in Peru, but there are plenty of birds to be excited about too.

Researchers are trying to determine when and how the brain begins to deteriorate. If drugs can be given sooner, they say, treatment might be more successful.

In Ethiopia, geladas sleep on the very edges of cliffs. It's a wonder they survive.

The hidden costs when prosperity is fueled by "cheap" energy.

Exiting Gov. David A. Paterson of New York has released an ambitious environmental plan to reduce the state’s greenhouse gas emissions.

Scientists discovered two bubbles of energy erupting from the center of the Milky Way galaxy.

The Pacific Gas and Electric executive in charge of the company’s smart meters used a fake name to join an online discussion organized by the program’s opponents.

Collisions between deer and cars are generally on the rise, and worsen from October through December as bucks recklessly chase does, often across roadways.

The Food and Drug Administration says manufacturers must do a better job of training operators, including issuance of warnings about high radiation.

The agency judges the science supporting action plans for two of the state's sootiest air basins, in Los Angeles and the San Joaquin Valley, to be inadequate.

The E.P.A. says it requested information on the chemicals used in hydraulic fracturing from eight other major drilling companies, all of which provided the information or pledged full cooperation by early December. Halliburton wanted more time.

With the rapid biological inventory in Peru complete, scientists turn to their next task: writing it all down.