Global warming is causing thousands of worldwide heat-related deaths plus destruction of crop lands, wildlife, infrastructures, and generating floods, droughts, and hurricanes in addition to frequent and longer-term blackouts.  It creates emotional and financial burdens to people and their communities around the globe. 
Trump is still leading chants for “Drill baby drill,” and if he is elected president, he plans to roll back environmental laws, regulations, and subsidies.  
As President of the United States, Trump would have a worldwide megaphone to encourage the increase of oil products and to discourage attempts to curtail use of fossil fuels. As president, Trump, would not only harm the United States’ climate and its economy, but also other countries.
Environmental deterioration is due primarily to oil explorations and having fossil fuels spewing greenhouse emissions into the atmosphere.  The oil companies producing the fuels do not appear to be taking aggressive steps to find alternatives or effective ways to ameliorate the problem.  On the contrary, they are expanding their detrimental environmental operations. The owners of these companies appear to be complicit with management.  The millions of shareowners should demand that oil companies take actions to alleviate harmful effects of their products, or they should sell their stocks.
These companies have the resources, talent, and research capability to develop alternatives to dirty fossil fuels.  Hydrogen is one alternative.  Recently, development in the hydrogen industry make it an increasing viable alternative.  Pure, natural hydrogen is found in multiple countries and the U.S. along the Mid-Continent rift in several states. Natural hydrogen has a price advantage because it does not require costly refining.  
An encouraging development of hydrogen is its ability to be converted into powder form for ease of transportation, storage, and as a component for batteries.  The research is now focusing on making powdered hydrogen scalable.
Gerry Snyder
Ely