CANNES: The annual Cannes Lions International Advertising Festival, which kicked off at the weekend, is to welcome to its glitzy get-together former US vice-president turned environment campaigner Al Gore.

The frontman of surprise cinema hit An Inconvenient Truth - about the claimed effects of global warming - is to address the ad industry's great and good on Friday as a curtain-raiser to next month's Live Earth music concerts.

The green advertising bandwagon has been jumped on enthusiastically by the ultimate champions of consumption.

Preaches Hamish McLennan, global ceo of the Y&R network that lured Gore to the French Riviera: "We have to change the way people consume and get people to think about it."

Apart from green credentials, also conspicuous by their presence at this year's event are the increasing numbers of entries in the internet ad category, which went up more than 8%.

Multimedia campaigns (at least three platforms) and new ideas rose 60%; in the biggest traditional categories, film entries are down nearly 8%, and press entries are down more than 5%.

The juries will evaluate over 25,000 entries from 80 countries in nine categories.

Data sourced from Adweek (USA); additional content by WARC staff