The US government spent $1.1 billion on carbon capture projects that mostly failed
Many had 'little chance of success' in the first place, the accountability office stated.
carbon capture
The largest direct carbon capture plant is now making a small impact on emissions
It could take a long time for these plants to make a difference.
High Hopes plans to extract atmospheric CO2 with hot air balloons
Balloons will carry equipment to freeze and trap carbon dioxide.
Apple starts $200 million fund to remove CO2 by restoring forests
The company doesn't think it can meet its carbon neutral goal otherwise.
Elon Musk's $100 million carbon capture XPrize competition starts today
Fifteen teams aim for "carbon negativity, not neutrality" with a $50 million first prize.
