Dec. 23, 2004
New Forest Regulations Loosen Governance
President Bush has announced new regulations that loosen the control and governance of the 155 national forests in the U.S. Experts discuss how the new rules will affect the management and protection of national forests.
Nov. 25, 2004
Everglades Restoration Project Could Yield Healthier Florida Wetlands
Tom Bearden from the NewsHour's Science Unit explores the massive effort to bring the Florida Everglades back to health. The NewsHour Science Unit is funded, in part, by a grant from the National Science Foundation.
Nov. 8, 2004
Arctic Ice Pack Reveals Warming Trend
Results of a four-year study released this week by a team of 300 scientists show the Arctic is warming at twice the global average rate. Tom Bearden reports on the science of the Arctic.
Oct. 22, 2004
Russian Duma Approves Kyoto Protocol
Russia's state Duma on Friday ratified the Kyoto Protocol, which aims to fight global warming, giving the global pact a good chance of being enacted and boosting Russia's chance at joining the World Trade Organization.
Oct. 8, 2004
Nobel Peace Prize Goes to African Environmentalist
The culmination of a week-long flurry of Nobel prize awards was Friday's announcement of Professor Wangari Maathai, an environmental activist from Kenya, as the Nobel Peace Prize winner.
Sept. 7, 2004
Scientists Call Air Pollution Global Problem
Air pollution is difficult to track and prevent because plumes of impurities that originate in one country can drift half a world away, ultimately affecting the climate and human health on different continents. Betty Ann Bowser looks at global efforts to overcome geopolitical hurdles in clearing the air.
Aug. 24, 2004
A Debate on How to Count Salmon in the Pacific Northwest
Lee Hochberg of Oregon Public Broadcasting reports on the debate over how to count fish -- specifically salmon -- in the Pacific Northwest.
July 13, 2004
Governors Debate Proposed Changes in Federal Forest Rule
The Bush administration proposed Monday to give governors more control over logging and road building on federal forestlands. The change would override a Clinton-era environmental regulation called the "roadless" rule.
July 1, 2004
U.S. Battles Invasive Species
Of the 50,000 non-native plant and animal species that have arrived in the United States from foreign countries, many are considered invasive and cost an estimated $138 billion a year in environmental and economic damage.
June 3, 2004
The Intersection of Politics and Science on a North Carolina Pig Farm
A group of prominent American scientists recently wrote a report accusing the Bush administration of "misrepresenting and suppressing scientific knowledge for political purposes." Jeffrey Kaye explores the intersection of politics and science on one North Carolina pig farm.
June 1, 2004
U.S. Outlines Case Against Terror Suspect Padilla
Terrorism suspect Jose Padilla plotted to use natural gas to blow up U.S. apartment buildings, according to newly declassified documents released by the Justice Department Tuesday. Margaret Warner discusses the government's case against Padilla with New York Times reporter Eric Lichtblau.
May 11, 2004
EPA Issues Off-Road Diesel Pollution Rules
Environmental Protection Agency chief Mike Leavitt signed new regulations Tuesday aimed at cutting pollutants from diesel engines in off-road vehicles such as farming and construction equipment by 90 percent over the next eight years.
April 22, 2004
President Bush and Democratic presidential contender Sen. John Kerry of Massachusetts both spoke on the subject of the environment today to mark Earth Day.
April 21, 2004
As Americans mark another Earth Day, the NewsHour's Science Unit examines how relatively small climate changes can affect small animals and plants in rainforests.
March 19, 2004
New Fish Guidelines Issued, Prompted by Mercury Concerns
Worries that the mercury in certain fish could harm young children prompted the government Friday to issue new guidelines for eating fish.
Jan. 26, 2004
Salmon is the most popular fish in the interior of the United States, but many American consumers have become concerned over whether the fish is still safe to eat. Lee Hochberg reports on whether there is any truth to these fish stories.
Jan. 9, 2004
Farm-Raised Salmon Higher in Cancer-causing Pollutants, Study Shows
A study published Thursday in the journal Science found that farm-raised salmon contain significantly more cancer-causing pollutants than those caught in the wild.