There is a sizeable cost to global warming. It is one reason scientists cite for Britain experiencing more flooding. Jews are often at the forefront of campaigns to help reduce global warming, or right other wrongs, and here is what you can do.
If you own shares, on any stock market, it is almost certain that they are in companies whose activities may be against your personal and ethical beliefs. For instance, you may disapprove of smoking yet be invested in a tobacco company. The companies' practices may also break, or go against the spirit of, Jewish law.
To choose an ethical fund, see www.yourethicalmoney.org/investments. You could also screen your portfolio and, after taking financial advice, decide what to divest from, aiming to make a profit.
Another useful site is www.carboncalculator.direct.gov.uk, which calculates carbon emissions, an indicator of how you pollute. For instance, say your household emits one tonne of carbon dioxide per year, you could invest in trees that consume that much carbon dioxide per year. You will offset your carbon emissions and have an investment to boot.