Doug Moss

What's the deal with rBGH, the hormone given to cows that makes them produce more milk? Why do some groups want it banned? —David Gray, via e-mail

Solar-powered trains run on the Sun's energy to operate, via solar panels placed on train stations, on the roofs of trains, or most commonly, from the rail tracks. They also often gain indirect energy from the sun, using electricity from solar farms that is sometimes stored in batteries to facilitate auxiliary functions other than propulsion, including lighting, ventilation and GPS systems. Most solar train travel as of 2026 has been for short distances, optimal for tourism and urban shuttles, like the Byron Bay Train in Australia.

Dear EarthTalk: Since the food we eat is an important environmental factor in our health, what foods are the healthiest for our bodies and the planet?

Dear EarthTalk: Is it true the federal government is planning to slaughter 450,000 wild owls in the Pacific Northwest? How do environmentalists feel about it?

Dear EarthTalk: What is the “white roofs” movement all about and could this really be an effective way to combat climate change?

Roddy Scheer & Doug Moss Dear EarthTalk: How can I spot social media misinformation regarding climate change and what can I do to combat it?

Roddy Scheer & Doug Moss Dear EarthTalk:What are agrivoltaics, and why are environmental advocates so bullish on it? Pat Billings, Butte, MT

Roddy Scheer & Doug Moss Dear EarthTalk: Is it true that polyester clothing might be a significant factor in the microplastics in our bodies and bloodstreams?

Roddy Scheer & Doug Moss Dear EarthTalk: What is “soilless” farming and is it better for the planet? B.R., via email

Roddy Scheer & Doug Moss Dear EarthTalk: How are conservationists encouraging reforestation in the Amazon? Peter Smyth, Tempe, AZ