ABC Radio National

The Science Show





Date/Time 29 Mar 2017 6:24:52pm
"more in the past thirty years than during the whole of human history"

Refers to the RATE of change. That is, the oceans are considered to be changing faster in 30 years than they have in thousands or tens of thousands of years.

"Our world is constantly changing, whether that change is natural, by our hand, or by an external event."

We all know the world constantly changes. That's not the issue. If it's by our hand and likely to cause a problem then we can stop it! If it's a cataclysmic external event (a massive meteorite) or some greater natural force then (good or bad) it's unlikely we can stop it. That is exactly the point. Climate change is deemed by most climate scientists to be both human caused and a bad thing, - and therefore something we can and should stop ...
