The latest estimates on endangered species

(Reuters) - Millions of children's lives and billions of dollars could be saved if vaccines were more widely available in 72 of the world's poorest countries, according to a series of studies published on Thursday.

In studies in the Health Affairs and The Lancet journals, public health experts and scientists projected that if 90 percent of children in those countries were immunized, more than $151 billion in treatment costs and lost productivity could be saved in 10 years, giving economic benefits of $231 billion.

* FAO says deforestation of world's biggest forests slowing

* Agriculture and population pressure still a big threat

BRAZZAVILLE, June 1 (Reuters) - The rate of destruction of the world's three largest forests fell 25 percent this decade compared with the previous one, but remains alarmingly high in some countries, the U.N. Food and Agriculture Organisation said.

Areas where food supplies could be worst hit by climate change have been identified in a report.

Some areas in the tropics face famine because of failing food production, an international research group says.

The Climate Change, Agriculture and Food Security (CCAFS) predicts large parts of South Asia and sub-Saharan Africa will be worst affected.

Its report points out that hundreds of millions of people in these regions are already experiencing a food crisis.

As the U.S. sees increased severity and frequency of hurricanes and tornadoes, there is perhaps no timelier reminder that the world's cities face devastating impacts from climate change.