Climate Change

A quick selection of images which have come in from BP HQ in St James's Square, where climbers have installed themselves to rebrand the company. Also included is the full page advert appearing in today's Guardian.

And you can submit your own ideas for BP's new logo in our competition.

Ever wondered what this ocean acidification thing is? Wonder no longer, as this new animation from our international office explains everything you need to know in just over a minute. 

The basic upshot is that climate change is not just making the oceans warmer, it's also making them more acidic. It's only by a relatively small amount so you won't lose your toes if you go paddling, but the effects on the ocean's chemistry is dramatic. Most widely reported is the threat this poses to coral reefs - as the water becomes more acidic, the polyps aren't able to create the calcium carbonate skeletons which form the reefs.

The consequences travel up the food chain - watch the video to find out more.

China is the king of coal. It is the world's biggest producer and consumer - but this reliance on coal is costing the country dear.

Because coal kills.

From the miners who dig it, to the people who breathe in its fumes, to the skies that swallow immense clouds of carbon dioxide, heating the earth and causing climate change and rising seal levels, coal takes more than it gives.