Global warming is likely to disrupt a natural cycle of ice ages and delay the onset of the next one until about 1,00,000 years since now, scientists said.
In the past million years, the world had about 10 ice ages before swinging back to warmer conditions. In the last ice age that ended 12,000 years ago, ice sheets blanketed what is now Canada, northern Europe and Siberia.
In a new explanation for the long-lasting plunges r global temperatures that cause ice ages, scientists pointe: to a combination of long-term shifts in the Earth’s orb: around the sun, together with levels of carbon dioxide r the atmosphere. They said the planet seemed naturally cc track to escape an ice age for the next 50,000 years, ar unusually long period of warmth. But rising man-mac- greenhouse gas emissions since the Industrial Revolutio: could mean the balmy period will last for 1,00,000 year: “Humans have the power to change the climate on geolc gical timescales,” said lead author Andrey Ganopolski.
Other group of scientists suggests an “Anthropocer epoch” began in the mid-20th century with factos such a nuclear tests and industrialisation. Hans Joachim Schellr huber, author, said a new epoch might instead be callec the ‘Deglacial’