A Boulder County clerk, citing a US appeals court ruling against Utah's ban, has issued more than 100 marriage licenses to same-sex couples, saying she believed she had a moral and legal obligation to do so.
Writer Alastair Humphreys coined the term 'microadventure' to promote the idea that a meaningful experience, like sleeping under the stars, doesn't have to involve spending money or a long travel time.
A 12-year pause in global warming, after 20 years of rapidly rising surface temperatures, has scientists probing for the reason. Volcanic eruptions and undersea heat storage are emerging as likely explanations.
After three years of decline, greenhouse-gas emissions are rising again, largely because of increased coal use. The best chance for the industry to erase its 'dirty coal' image is through carbon capture, which is making progress.