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There was no shortage of grim news for the environment in 2016. But the year saw some clear signs of environmental progress, too. These five environmental stories were true bright spots.
PAVING THE WAY: It's only 1 km long, but a two-year test of a solar roadway in France will help decide if a full 1000 km rollout is worth pursuing.
LET IT SHINE: The renewable energy future will arrive when installing new solar panels is cheaper than a comparable investment in coal, natural gas or other options. That day has come.
SWEAT EQUITY: An emerging cardio equipment company is striving to make working out an energy saving activity by sending the power generated by elliptical machines and stationary bikes back into the grid.
BRIGHT FUTURE: As solar power heats up, prices are going down. Over the past 40 years, the cost of solar has decreased by more than 99 percent.
GREEN HOUSE: When it comes to greenhouse gas emissions, are heat pumps or high-efficiency gas furnaces a better way to heat your home?
FEELING LUCKY: Last year, Google consumed as much energy as the city of San Francisco. Next year, it said, all of that energy will come from wind farms and solar panels.
FACT: During the short period that holiday lights are used each year, they consume enough energy to power 200,000 homes for a year.
SUN ROOF: When the classic style of a '73 VW bus is combined with an electric vehicle conversion and an onboard photovoltaic solar array, you get an eye-catching family-sized clean transport solution.