A new study has found that a 2011 estimate of methane emissions generated by the planet’s livestock was incorrect, with the new finding indicating that they were actually 11 percent higher than the numbers used by the Intergovernmental Panel on Climate Change (IPCC), leading to the guidelines and targets set out in the Paris climate accord. Methane (CH4) is produced from the decomposition of biological matter, such as livestock manure, and is a potent greenhouse gas, retaining up to 86 times more heat energy than the same mass of carbon dioxide over a 20-year period.
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A new study published in the journal Nature Geoscience has found that the goal of the Paris climate accord of keeping global warming levels below 2ºC (3.6ºF) may be easier to achieve than originally anticipated, allowing humanity a much larger carbon budget to work with. One of the major reasons certain parties have rejected the Paris Accord was the perceived difficulty in attaining that goal, but this new finding, if correct, should help encourage more action in regards to what we need to do to curtail global warming.
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A slowly growing field of biological research is uncovering evidence that increasing levels of carbon dioxide in the atmosphere is steadily decreasing the concentration of nutrients in our food supply. Plants metabolize CO2 in the same way we metabolize oxygen, and increases in CO2 levels have proven to boost plant growth, but that increased growth causes the affected plants to pack on more carbohydrates at the cost of taking on nutrients such as vitamins and minerals — effectively turning crops we consider to be healthy dietary choices into junk food.
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One could say that we have a beef with the rising amount of methane (CH4) in the atmosphere: although this powerful greenhouse gas breaks down much faster than carbon dioxide, it traps 86 times more heat than CO2 over a 20-year span. Human activity has been the chief source of the increase in modern CH4 levels, having increased by about 150 percent since 1750, with about half of all human-generated methane coming from our livestock — particularly from the planet’s 1.5 billion cows. However, a new study has found that spicing a cow’s feed with simple seaweed can cut a burping bovine’s methane production by up to 99 percent.
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