Put a price on carbon
While it’s true that 400 parts per million (ppm) is only slightly more damaging than 399 ppm, the sad news is that this new “record” is sure to be broken in a matter of months, first by 401 ppm, then 402 and 403 [“Atmospheric carbon-dioxide levels hit worrisome milestone,” News, May 12].
When will it stop? Whenever we decide to finally stop using fossil fuels. How can we stop such a routine part of our day-to-day lives? By putting a price on carbon, preferably at the source, with the income rebated to all citizens. Join Citizens Climate Lobby to help make this happen. We have a lot of work to do; let’s do it now.
Fran Koehler, Seattle