Opinion www.nytimes.com David Koch was the ultimate climate change denier How a playboy billionaire built a political army to defend his fossil fuel empire.
Politics www.nytimes.com David Koch, billionaire who fueled right-wing movement, dies at 79 A man-about-town philanthropist, he and his brother Charles ran a business colossus while furthering a libertarian agenda that reshaped American politics.
Politics www.nytimes.com How the Koch brothers are killing public transit projects around the country In communities across the country, the billionaire conservatives are waging a sophisticated fight against new rail projects and bus routes.
As Biden prepares to block the sale of U.S. Steel to Nippon Steel, pollution concerns persist in Pennsylvania
A Pennsylvania fracking company with more than 2,000 environmental violations selected for federal environmental justice funding
