The reef is also increasingly feeling the effects of acidification, as the oceans absorb most of the CO2 being released into the atmosphere by fossil fuel burning and other human activities, upsetting the chemical balance corals and shell-making animals rely on. Scientists are actively measuring how heat and acidification changes the health and growth rates of coral in tank experiments like the work of Dr. Sophie Dove at Heron Island Research Station, where we documented her “time machine” of 12 matched “mini-reefs” in which water is calibrated to past, current and predicted levels of CO2 in the atmosphere. At the same time, Carnegie Institution studies on a nearby coral lagoon showed that acidification is already slowing coral growth , and other scientists are trying to understand which corals resist changes and could be used for restoring damaged reefs.
Global warming is largely caused by carbon dioxide emissions. Unfortunately, the modern global economy heavily relies on carbon-based fuels. Because of this, taking on global warming might seem overwhelming. However, there are many things you can do to help reduce its effect. By changing your consumption habits, taking steps to save energy, and organizing with others, you’ll be able to take a real stand against global warming. In the end, you'll not only help save the planet, but you'll have fun raising awareness and making a difference.
In May 2013, it was reported that readings for CO 2 taken at the world's primary benchmark site in Mauna Loa surpassed 400 ppm . According to professor Brian Hoskins , this is likely the first time CO 2 levels have been this high for about million years.   Monthly global CO 2 concentrations exceeded 400 ppm in March 2015, probably for the first time in several million years.  On 12 November 2015, NASA scientists reported that human-made carbon dioxide continues to increase above levels not seen in hundreds of thousands of years; currently, about half of the carbon dioxide released from the burning of fossil fuels is not absorbed by vegetation and the oceans and remains in the atmosphere.