Monday, February 24, 2014- Geophysicist Kaustubh Thirumalai explains how the Earth has changed temperature over the last 11,000 years. Climate change is real.


Geophysicist Kaustubh Thirumalai (@holy_kau) explained so much about the world we live in, and how it has been changing in time.  Over the last century, physical chemists like Harold Urey figured out that the relative abundances of isotopes were sensitive to the local temperature.  Kaustubh has applied these so-called 'proxies' as ways to indirectly measure the temperature and salinity of the ocean.  These measurements go back to the last 10,000 years (aka. the 'Holocene' - in between glacial worlds). Why was it hotter or colder in the past?  What will the climate be like in the next 100 years?  About 56 million years ago the world had a period of enhanced warming, which gives us an imperfect analog to the modern climate. Kaustubh breaks down the fact that the vast majority of scientists are in accord about anthropogenic climate change.