The num­bers

Element - - Upfront -

1/3

The pro­por­tion of CO2 emis­sions from hu­man ac­tiv­i­ties which en­ter the world’s oceans

17,000 years

The amount of time taken af­ter the last ice age for CO2 con­cen­tra­tions to in­crease by 100 parts per mil­lion (PPM)

150 years

The time taken to the present day for the CO2 lev­els to in­crease by the same amount

15%

The amount by which cal­ci­fi­ca­tion rates of corals and shells have de­creased in the past 200 years

40%

The amount by which it is fore­cast to re­duce over the next 90 years

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