Coltan ore is valuable as a source of niobium and tantalum, metals key to many kinds of electronics. Coltan mining has helped finance war in places like the Democratic Republic of Congo. Now new illegal coltan mining activity has sprung up in the remote Amazon jungles on the border between Venezuela and Columbia. It is controlled largely by armed militias and drug smugglers.

"President Barack Obama on Sunday told a pro-Israel lobbying group that 'loose talk of war' was only serving to benefit Iran because it was driving up the price of oil."

"The help-wanted sign is out in Canton, Ohio, for Chesapeake Energy."

"The company that has led the charge in shale gas drilling is looking for truck drivers with licenses for hazardous materials, a purchasing coordinator for oil field equipment, a pipeline technician, a field safety coordinator, administrative assistants, troubleshooting electricians, a tax analyst and more.

"The House [Thursday] morning voted to allow a $690 million highway bridge over the federally protected St. Croix River, ending decades of legal and legislative wrangling and setting in motion what would be the largest bridge project in Minnesota history."

Tornado warnings mean life or death -- as recent storms in the Midwest showed. Minutes count, and better staffing and technology can help the National Weather Service save lives with earlier tornado warnings. But the political drive to cut federal agency budgets are hurting the NWS's ability to improve forcasts, a federal employee union says.

Budget pressures -- at least politically perceived ones -- are threatening basic science about the nation's water resources. In recent years the US Geologican Survey has cut back its programs for measuring streamflow and water quality -- which help protect people from flood disasters and drinking unhealthful water.

"NASHUA, N.H. -- With his re-election fate increasingly tied to the price Americans are paying at the gas pump, President Obama asked Congress on Thursday to end $4 billion in subsidies for oil and gas companies and vowed to tackle the country’s long-term energy issues while shunning 'phony election-year promises about lower gas prices.'"

"The war of words between the Obama reelection campaign and billionaire conservative activists Charles and David Koch escalated Wednesday. The president's campaign manager, Jim Messina, sent a letter to Philip Ellender, Koch’s president for government and public affairs, disputing Ellender's claim that an organization partially backed by the brothers represented the interests of thousands of grassroots donors."

"The House approved a bill Wednesday that rewrites two decades of water law in California, wiping out environmental protections and dropping reforms of federal irrigation policy that have long irritated agribusiness in the Central Valley."

"Senate Energy and Natural Resources Committee Chairman Jeff Bingaman (D-N.M.) will introduce legislation Thursday mandating that power companies generate a major portion of the country’s electricity from low-carbon energy sources."