A group of scientists caused peak hour traffic mayhem in Melbourne this morning, with travel times blowing out by as much as three hours for some motorists.

Press PLAY below to hear why they’re blocking the road

Scientist Rebellion — an offshoot of Extinction Rebellion —blocked two lanes of the Kings Way inbound exit ramp off the West Gate Freeway during the morning peak.

Three people have been arrested in relation to the protest and the road is now cleared.

Honorary Associate Professor at ANU, Nick Abel, told Neil Mitchell he turned out to the protest because the situation is now urgent.

“I’m 80 this year. We’ve been telling them since I was 30 years old this was coming,” he said.