Improving health of California's smelt?

I would like to address Marti Gorun's letter of April 25 in regard to climate deniers.

First, 97 percent were from a survey in which only about 60 percent of the scientists responded. Using the earth at 4.5 billion years old, let's look at CO2. Currently CO2 is at around 400 parts per million or 0.04 percent of the total atmosphere.

They claim that the tipping point is 350 PPM, which we have already exceeded. Samples determined by measuring the weathering of certain minerals, erosion of fossilized organic matter and ice cores from Antarctica.

According to the GEOCARB III model by Robert Berner and Zavareth Kothavala of the Department of Geophysics at Yale, the levels were at various times several thousand parts per million. Other models place CO2 at lower levels but at levels 10 to 15 times of modern levels.

The polar bears are doing fine in polar ice. Antarctic sea ice and Artic sea ice has record growth per NSA and NOAA. Remember Al Gore famously claimed that Artic sea ice would be gone by 2014. I wonder if he visited Boston this winter.

Last point, California's conservation caused the water shortage. California's Department of Water Resources show that farming accounts for 41 percent of applied water usage, 10 percent urban usage and 48 percent reserved for environmental purposes, which includes improving the health of the Sacramento-San Joaquin Delta and its most famous inhabitant, the delta smelt.

Critics ask if keeping water in the delta at the expense of crops and consumers has actually done good? This, while the fish are being bred in two hatcheries.

Robert Chmela

Elgin