HARI SREENIVASAN:

There has recently been a steady drumbeat of reports from climate scientists warning that there is less and less time for us to take collective action to slow the disastrous effects of climate change.

The United States has withdrawn from the Paris climate agreement, and the president has been an open skeptic of established facts. This has not deterred a global green revolution; countries around the world are continuing to move forward with investments in renewable energy.

We'll be looking at various, innovative energy efforts periodically, starting with one underway in Scotland. The country is nearly 70 percent powered by renewable sources already, with the goal of reaching 100 percent by 2020, 10 years ahead of schedule.

Their power traditionally came from deep sea oil and gas, but the ocean has a lot more to give, as you'll see in this, the first of a two-part series.

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