2. Article By Chris Samoray 6:00pm, November 4, 2015 Sciencenews.org

3. Green House Gases A green house gas is gases in the atmosphere that absorb infrared radiation, which traps the heat. When the heat increases in the atmosphere it causes the green house effect which leads to global warming. The main green house gases are carbon dioxide, methane, nitrous oxide and fluorinated gases.

4. Methane Gas(CH4): A Major Cause of Global Warming Methane is the second biggest contributor to global warming. The methane in this article is from the agricultural and animals. Which animals are contributors?

5. Kangaroos VS Cows Adam Munn, a wildlife biologist at the University of Wollongong in Australia, and colleagues did a study over a 12 day period.  A single kangaroo can produce 1000 liters of methane a year  The 2 kangaroos species were on a restricted diet they ate alfalfa hay then they got switched to a free rein diet.  Both species produced more methane when they were on the restricted diet. That could be because a higher food intake moves food and microbes through the digestive tract faster, not giving the microbes enough time to establish a steady population and start producing methane.  Not everybody agrees with this study.  According to Athol Klieve, a microbiologist at the University of Queensland in Australia, They did not go to every angle. Their conclusions were not complete. Lots of other papers that show very little methane is produced by kangaroos.  Cows emit a massive amount of methane through belching, with a lesser amount through farting but can produce up to 200- 500 liters of methane a day.  cows are responsible for 14% of our worlds greenhouse gases. Should increase by 60% in 2030.  Cows, Sheep, Goats and several other animals are called Ruminants.  Ruminants have 4 stomachs and digest their food in their stomachs instead of in their intestines, like humans do.  Ruminants eat food and throw it up and eat it again. The stomachs are filled with bacteria that help in digestion, but also produce methane.

6. REDUCING EMMISIONS Ideas  Adding garlic to diet can reduce methane production in stomach  Study sheep because of similar stomachs because sheep are less fussy.  What they eat and grazing control.  Some dairy farmers use processing systems to harvest methane from cow manure. The energy is used to power the farm while excess is often sold back to the local electrical grid.  Reduce the amount of beef you consume.

7. Thanks for watching Presentation by !saac Hooper