Current sea-level rise is linked to human activities and not changes in Earths orbit, according to a new study, reaffirming scientific consensus on the effects of human-induced climate change.The new research found that in the last 66 million years, the planet had almost ice-free periods when carbon dioxide (CO2) levels were not much higher than todays measurements. The research also discovered glacial periods in times previously believed to have been ice-free.The study, conducted by a team from Rutgers Universitys Department of Earth and Planetary Sciences, concluded that minor variations in Earths orbit was the controlling force on ice volume and fluctuations in sea levels for millennia the same which cannot be said today.Download the new Independent Premium appSharing the full story, not just the headlinesDownload now