If you want to keep up with the latest environmental news, there is no lack of newsletters you can follow online. Here are some you can try for free:

• I like The Guardian newsletter Green Light. It arrives weekly and has a British perspective on the environmental crisis. It begins with stories of good news, progress being made, and then of bad news, set backs. At the end of each issue is a report on the level of CO2 in the atmosphere compared to the previous year and a baseline.

• Grist is an independent online news outlet founded in 1999 that provides a sometimes irreverent take on the happenings of our time. But it also does in-depth stories on under-covered topics like clean energy, sustainable food, livable cities, environmental justice, and a better economy. Its weekly environmental newsletter is called The Weekly.

• Treehugger is a blog whose primary goal is to make it easy for consumers to research and purchase environmentally sound products and services, as well as to inspire corporate responsibility. It publishes a daily newsletter covering the top environmental stories around the world.

• HuffPost publishes a weekly newsletter, This New World. Unlike the others, it is not a consolidator, but features an in depth article each week on environmental topics like ocean plastics, schools turning to solar power and making a sustainable grocery list. You need to register, but after that all of HuffPost is free.

And finally, a couple of good environmental newsletters that are available only to paid subscribers:

• The New York Times sends a weekly email environmental update called Climate Forward which has the latest stories and insights about climate change — along with answers to questions and tips on how to help.

• The New Yorker sends a weekly column by senior environmentalist Bill McKibben called The Climate Crisis. McKibben writes about a current climate concern and then interviews other environmental leaders about their efforts.

So, stay informed, and then write letters to your legislators and to your local newspaper about the climate issues that concern you.

~Elliott J Bush