20 October 2011
Last updated at 13:06 ET
The UK government launches a tree biosecurity plan, as scientists confirm the arrival of another deadly tree disease in England.
Leaders of nearly 200 major companies around the world call for tougher action on climate change, saying it will reduce prosperity if unchecked.
Wave and tidal stream power are set to get more funding in proposed changes to the level of support for renewable energy.
The launch of the first satellites for Galileo - Europe's version of GPS - is delayed due to an anomaly during fuelling of their Soyuz rocket.
Governments and aid agencies should help the world's poorest to move away from areas likely to be hit by flooding and drought, a UK report says.
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00:45 UK time, Tuesday, 18 October 2011
It is one of the most important weeks in the history of European space activity, with the first Russian Soyuz rocket set to launch from French Guiana.
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