Environmentally responsible investing requires we apply carbon sense thinking, says our guest, Doug Heske, CEO of Newday Impact Investing. Doug and Earth911's Mitch Ratcliffe launch a series of conversations about making informed decisions about stocks and funds, beginning with a comparison of the emerging solar and declining fossil fuels industry. In this episode, we'll  look at Sunpower, First Solar, Canadian Solar, Sunnova and Tesla, all stocks Doug suggests are core energy holdings for the future, as well as Exxon Mobil, Chevron, British Petroleum and Royal Dutch Shell, which he advises avoiding or selling if your goal is to protect the environment. Watch for new responsible investing programs every two weeks.We also discuss the nascent investments by oil companies in renewable energy and carbon capture, which have not become serious enough to justify buying those stocks. During the conversation, Doug gave himself some homework and he answered after the show: One of the solar companies discussed, integrated solar provider Canadian Solar, has significant Chinese ties that may increase risk. Earth911 urges you to carefully consider any investment before making a decision to buy or sell any assets.