Like a modern cicada, the ancient katydid used its legs to make sounds to attract members of the opposite sex. But unlike their modern descendants, the ancient critters produced just a single note.
A Republican transportation bill seeks to eliminate the $1.6 billion in federal transportation funds that has been used to add bike lanes, improve sidewalk, create curb cuts and otherwise enhance roadways to make them more friendly to cyclists and pedestrians.
The substance that gives plant cells their rigid nature, the same substance that binds trees together, is typically discarded as waste in the agricultural process. But a Kansas State University student is researching how that waste, lignin, may be used in construction.
A Drexel University professor is trying to reduce the environmental impact of cement — one of the most ubiquitous materials on earth. So far, he's had success in all of the areas that matter.
Norway's musk oxen are doing well today, but just a few years ago, when temperatures reached record highs, they died in unprecedented numbers. Now scientists say that may have been a warning of what is to come if the Earth's temperature continues to rise.
When a body is cremated, if it has any metal parts, like a titanium hip, those metal parts are left behind. For years it was either buried in graves or sent to the dump. But a Dutch company, OrthoMetals, has a business that gathers those materials and processes them for industrial reuse, sending the proceeds to charity.
As the rain and water in Mozambique becomes less predictable and less suited to subsistence farming, aid groups and the local government are trying to help some change the way they farm so they're not so paralyzed by a flood or a drought. But there's a lot of work to do.
About two years ago, the Maldives announced the nation would be carbon-neutral by 2020. That's a tall order for a country that spends 15 percent of GDP on diesel fuel, but work is progressing toward that goal.
Nitrogen fertilizers have been crucial to feeding the increasing number of mouths on earth, but the pollution they leave behind has real consequences that have costs of their own.
Hybrid cars account for just 2.5 percent of the car market despite being on the market for about a decade. But automakers continue to offer more, perhaps in hopes they'll help balance out their fuel efficiency average.