May 10 Watch Collapse of Overpass in California Becomes Lesson in Construction An overpass near the Oakland-San Francisco Bay Bridge collapsed last month after a gasoline truck crashed into a guardrail and burst into flames. For an engineering professor, the incident has turned into a lesson for building safer structures. Continue watching
May 07 Watch Intel Works on Faster Computer Chip Technology Intel's new computer chip, due out later this year, uses hafnium rather than silicon in its transistors. This innovation will double the number of transistors that can fit on a chip, Intel says, leading to faster and more powerful computers. Continue watching
May 04 U.N. Panel Outlines Plan to Reduce Global Warming By Admin, PBS News Hour The world needs to significantly change its use of energy resources and cut greenhouse gas emissions in order to stem rising global temperatures, according to a U.N. climate report issued Friday. Continue reading
May 02 Watch Physicist Searches for Alternative Fuel Technologies Nobel Prize-winning physicist Steven Chu and his team of scientists received $500 million in February from energy company BP to develop clean biofuel technologies. As part of a series on climate change, the NewsHour profiles Chu's search for solutions to… Continue watching
May 01 Watch Energy Experts Debate Future Use of Coal In the fifth part of a series about how to deal with climate change, a coal industry advocate and the author of a book critical of the coal industry debate whether new coal technologies hold promise or peril. Continue watching
Apr 25 Watch Author Says Redirect Resources Against Climate Change Danish author and statistician Bjorn Lomborg discusses his proposal to redirect resources from a general fight against carbon emissions to specific efforts to mitigate the effects of climate change in vulnerable areas. Continue watching
Apr 18 Watch Technology Helped Virginia Tech Students Connect After Tragedy In the wake of shootings that left 33 members of their community dead, Virginia Tech students went to Web sites such as Facebook and MySpace to memorialize friends and make sense of the carnage. Continue watching
Apr 16 Global Warming Poses National Security Threat, Report Finds By Admin, PBS News Hour Global climate change could have an increasing effect on U.S. strategic interests and will likely pose "a serious threat to America's national security," a panel of retired generals and admirals said Monday. Continue reading
Apr 13 Watch Author Promotes Lifestyle Changes in Global Warming Fight A writer and environmentalist explains how lifestyle changes can reduce greenhouse gas emissions and help mitigate America's contribution to global warming as part of a NewsHour series on ways to deal with climate change. Continue watching
Apr 11 Watch Carbon Tax Aims to Cut Greenhouse Gases The NewsHour's series of conversations about approaches to deal with global climate change continues with a discussion of carbon taxes -- levies that would aim to reduce greenhouse gas emissions by taxing activities that burn fossil fuels. Continue watching