Investment guru Mario Gabelli recently offered two stocks to buy if you are interested in saving the world.

The chairman and CEO of GAMCO Investors Inc., Rye, N.Y., recently confessed to Barron’s that his “theme for the 2020s is saving planet Earth.”

Gabelli said that a stock “linked to that is Connecticut-based Avangrid (AGR), which trades at $50. They have a regulated utility business, and their $10 billion rate base is growing. So, we’ll have a tailwind to earnings and a rising dividend. The second part is the renewables business; they’re a major factor in solar and wind

Gabelli also suggested NextEra Energy Partners (NEP), at $52, which he said also represents a significant opportunity in renewables.

To be sure, the environment and the climate-change debate has become a controversal investment topic.

Meanwhile, a BlackRock-backed group aims to raise an initial $500 million for a private equity fund that will invest in climate change-linked infrastructure upgrades in emerging markets, Reuters reported.

The group will provide the first $100 million of funding for the Climate Finance Partnership (CFP), which was set up in 2018 along with France, Germany and the Hewlett and Grantham charitable foundations, it said in a statement on Wednesday.

The funding will go towards a first-loss tranche that will absorb any initial losses, a safety net for other institutional investors that BlackRock expects to help it raise at least another $400 million.

The CFP fund will be invested in renewable energy, energy efficiency, energy storage solutions and ultra-low and electric transport. At least a quarter of the investments would be made in Africa, with the rest in selected countries in Southeast Asia and Latin America, BlackRock said.

The venture is part of a wide-ranging overhaul of the way BlackRock, the world's biggest asset manager, is responding to the issue of climate change, as part of a broader commitment to environmental, social and governance-related investing.

Climate has also been at the forefront of this year's annual World Economic Forum in Davos, Switzerland, at which news of the planned initial fund-raising was announced.

For her part, German Chancellor Angela Merkel says she’s worried about the growing conflict between young campaigners for a cleaner planet and those who reject global warming, Bloomberg explained.

Their stances have become “irreconcilable” and led to a gap in dialog just when nations need collective actionon climate change, Merkel said.

“The question of achieving the Paris Agreement goals could be a matter of survival for the whole continent and that is why there is pressure to act,” said Merkel. Scientific evidence is clear and emotions should not be confused with facts, she said.