A few carbon capture and sequestration projects are under way, but economics and politics are holding the technology back.
The waste heat in cement production can drive technologies that can grab at least 30 percent of a plant’s carbon dioxide emissions.
Startup Alphabet Energy has its first product: what it says is the world’s largest thermoelectric generator.
A Columbia scientist and his startup think they have a plan to save the world. Now they have to convince the rest of us.
A coal plant in Saskatchewan will capture most of its carbon pollution—and use it to extract oil from the ground.
A new fuel rod design will be tested in a full-size reactor, but some worry it could bring fresh safety problems.
A simple, cheap device turns sunlight into hydrogen fuel.
A new study says the population could hit 12 billion by 2100, though it doesn’t take into account the effects of climate change, food shortages, disease, or conflict.
A faster enzyme for turning CO2 into sugar is a key step toward much higher crop yields.
A soft, lightweight exoskeleton developed at Harvard applies assistive force without interfering with a person’s normal gait.