The fifth of the five contenders for the 100th Object in A History of the World in 100 Objects was announced today: the pestle and mortar. The other four are a football shirt, a mobile phone, an Antarctic suit and - the one we're all rooting for - the solar-powered lamp and charger.
The solar industry is wrapping up its most successful year ever. Solar is now the fastest growing energy industry in the U.S., employing nearly 100,000 Americans
Today's Guardian carries the news that installation levels in the UK are hitting five times what they were in 2009.
The name of the 100th object will be announced on Radio 4 tomorrow and feature in the broadcast on 22 October.