Tesco PLC (Public, LON: TSCO) is a UK-based international grocery and general merchandising retail chain. It is the largest British retailer by both global sales and domestic market share, with profits exceeding £3 billion.
It is currently the third largest global retailer based on revenue, behind Wal-Mart and France's Carrefour, but second largest based on profit, ahead of Carrefour. Originally specialising in food and drink, it has diversified.
Improved biodiesel from fish and cooking oil Spain
Researchers from Granada (Spain) and Campina (Brazil) Universities succeeded in developing a new type of biodiesel that is more resistant to oxidation from mixing fish oil with cooking oil.