ENVIRONMENTAL activist

Leonardo DiCaprio

has followed

Al Gore

's lead and brought a climate change documentary to the Cannes Film Festival. DiCaprio co-produced and co-wrote "The 11th Hour," which explains how humans have changed the climate and how to fix the damage.

"It's such an amazingly large issue," Leo told reporters Saturday in a beach cabana overlooking the Mediterranean.

Hey, if you're going to experience climate change, it might as well be on the French Riviera.

While "An Inconvenient Truth" laid out the science behind global warming and its impact, Leo's film accepts that global warming does exist and goes from there. It asks and responds to philosophical questions such as, how did mankind let nature deteriorate to this point?

The movie, which was directed by Leila Conners Petersen and Nadia Conners, includes commentary by visionaries from physicist Stephen Hawking to former Soviet President Mikhail Gorbachev.

In other movie news . . .

* Not every Mexican crosses the border to do a job "we" don't want to.

Three Mexican film directors whose work received 16 Academy Award nominations at this year's Oscars are partnering with Universal Pictures in a deal worth a reported $100 million.

Guillermo del Toro ("Pan's Labyrinth"), Alfonso Cuaron ("Children of Men") and Alejandro Gonzalez Inarritu ("Babel") will produce five movies, some of them in Spanish, the Los Angeles Times reported Saturday.

The trio's production company will be called Cha Cha Cha.

* In other film financing news, Venezuela's Congress says it has approved money for two films by Danny Glover, a close supporter of President Hugo Chavez.

Glover's films will be "The General in His Labyrinth," which deals with the life of South American liberator Simon Bolivar, and is based on a novel by Colombian Nobel Prize-winning writer Gabriel Garcia Marquez. It will be directed by Venezuela-born director Alberto Arvelo.

The other is "Toussaint," to be directed by Glover, documenting the life of Haitian revolution leader Toussaint Louverture.

Tattle family court

* Anne Heche's divorcing husband, Coleman Laffoon, wants at least $33,000 a month in support and joint custody of the couple's 5-year-old son, saying the "Men in Trees" star is a bad mom.

In filings, Laffoon says Heche has refused to allow their son, Homer, to be enrolled in a private kindergarten in Southern California. She has said she wants the boy to move to Vancouver where she spends part of the year filming her series, and where, he says, she is too busy to properly care for him.

Laffoon said Heche made some "very poor" parenting decisions in Vancouver, such as failing to provide a car safety seat for Homer and making lunches he didn't like.

After one visit, she forgot to return Homer's favorite shoes and "his bedtime stuffed animals, which are very important to him and which caused him extreme distress," Laffoon said.

Talk about a cultural disconnect - there are kids in this country who don't have any shoes.

If Homer is experiencing extreme distress over a missing stuffed animal or a soggy sandwich, that boy better toughen up.

Regarding the support, Laffoon, a former freelance videographer, said he didn't work during the marriage because the couple agreed he would be a stay-at-home dad - he had previous experience as a nanny and summer camp counselor.

* Ryan Phillippe, meanwhile, wants joint custody of his children with Reese Witherspoon.

Witherspoon filed for divorce on Nov. 8, citing "irreconcilable differences," and asked for physical custody of 7-year-old Ava and 3-year-old Deacon.

In a response last week, Ryan asked for joint legal custody and physical custody of the children as well as visitation granted "to both parties, equally allocated."

Tattbits

* Trendy British singer Amy Winehouse married Friday in Miami, Spin magazine reported.

It was a Fielder-Civil ceremony as the "Rehab" singer married Blake Fielder-Civil.

The couple was engaged April 23, so as long as you wed on a whim and don't invite many friends, you can plan a wedding in less than a month.

* Stephen Starr's New York Buddakan got some publicity last week when Jenna Fischer of "The Office" fractured her back in four places after falling down a set of stairs at the restaurant.

Her rep told the New York Daily News that Jenna "avoided anything scary near the spine and she'll make a full recovery in time to shoot season four of 'The Office' this summer."

* Britain's News of the World reports the Spice Girls are getting back together. So far it's only for one song, thank goodness.

* In better music news, 79-year-old rock legend Fats Domino returned to a New Orleans nightclub stage Saturday, nearly three years after his last public performance. (Fats had his home, pianos and gold and platinum records washed away by Hurricane Katrina in August 2005 and had to be rescued by boat from his 9th Ward home).

Tattle do-gooders

* Rachael Ray is promoting Share Our Strength's Great American Bake Sale, in which participants hold sales to raise money to feed hungry children.

Info available at greatameri

canbakesale.org.

* Nick Carter of the Backstreet Boys has been appointed a U.N. special ambassador of the Year of the Dolphin.

"I was shocked. And happy at the exact same time because I really felt like it was an honor," he told AP Radio News.

Nick said he'll expand on the feelings he expressed in his song "Believe" in order to write an anthem about the plight of dolphins.

It's good for one's life to have a porpoise. *

Daily News wire services contributed to this report.

Send e-mail to gensleh@phillynews.com