Glacial Thames

As the Arctic warms up, the Gulf Stream starts to slow and temperatures in the UK plummet. Winters become unbearably harsh. Never mind hell freezing over, the Thames does it every winter. When the thaw comes, the city floods - a tediously predictable event for long-suffering Londoners.

The frozen Thames is both romantic and frightening. It happened regularly in the 16th century when painters recorded the delightful scenes. But this time long-term ice is building up.