Japanese company named as biggest online retailer of ivory and whale meat

Conservation groups say Rakuten’s website carries 28,000 adverts for elephant ivory and 1,200 for whale products

Paris museum offers Picasso a bigger canvas as it prepares for reopening

The €52m transformation of the 17th-century Hôtel Salé has been undermined by delays and controversy over the cost

France’s truffle farmers aim to stop inferior Chinese fungi getting a sniff

Scientists use their noses to help distinguish between highly prized black truffles and cheap Chinese imports

Norway has fallen in love with electric cars – but the affair is coming to an end

Free parking, incentives and driving in bus lanes push Tesla Model S and Nissan Leaf to top of best-seller lists

China becomes biggest market for red wine, with 1.8bn bottles sold in 2013

Boom attributed to new urban affluence – and to Chinese fondness for lucky colour