Although there have been important efforts in recent years, Latin America lags far behind the industrialized countries in the global science and technology race.
The plans of Latin American governments to fight indiscriminate logging have achieved some victories, but they continue to run up against strong economic interests.
Except for a few notable exceptions, dolphins in captivity in Latin America face mistreatment from humans and the ills associated with being kept far from their natural habitat.
An invention of Mexican university researchers could put an end to the toxic waste that the mining of gold and silver leave behind.
Every year, some 300 indigenous people from the eastern Mexican state of Veracruz march naked through the streets of the capital to demand land. But while their unusual form of protest certainly attracts attention, there is little chance that it will achieve their goals.
The scandal of toxic China-made toys has cast doubt over the health safety of products for children around the world, and in Latin America in particular.
Authorities say that deforestation in Mexico has been reduced by nearly 100,000 hectares annually since 1990 and could be halted in five years. But environmental activists refute those figures, saying forests continue on the road towards disappearing.
Mexico's Sierra Gorda Reserve embodies the paradox of the emigration of the poor: nature benefits from a smaller human population, while remittances from family members abroad are the main source of income for those who remain.
Less rain and more heat seem to be the cause of the persistent pests afflicting the trees of the unique Sierra Gorda reserve in Mexico.
Latin America is waging its first wars against uncontrolled advertising and consumption of junk food.
Buildings in North America produce vast amounts of greenhouse gases, sewage and other waste. In Mexico, ecological construction is just getting started, with 5,000 housing units near completion.
Mexico intends to erect as many as 3,000 wind turbines on the Isthmus of Tehuantepec by 2030. Peasant farmers have doubts about the project's benefits for the local community, and scientists warn about potential hazards to birds.
Experts and activists plan to take two mega-developments in the Mexican state of Jalisco to international courts, for threatening the Chamela-Cuixmala protected area.
Indigenous women are at the forefront of a protest in Mexico demanding water. "We won't give up until they give us water," says Beatriz Flores, one of the movement's leaders.
Diarrhea, caused by contaminated drinking water, kills more children in Latin America and the Caribbean than tuberculosis or HIV/AIDS, warns the United Nations. Millions of children -- children of the indigenous and black communities in particular -- are at risk.
Although the Vicente Fox government closed the door on genetically modified maize, the multinational corporation Monsanto has no plans to leave Mexico, an executive at the firm told Tierramérica.
Mexico is closing the door on experimentation with genetically modified corn varieties. Environmentalists applaud the decision, but biotech scientists are disappointed.
Argentina, Brazil and Mexico have announced construction of new atomic reactors for generating electricity. Environmentalists warn about safety risks.
Latin America's two leading mines have been hit by labor conflicts. The workers who daily risk their lives in extracting ore are demanding their share of the industry's recent bonanza.
Vague and contradictory -- that's how activists describe the environmental proposals of the presidential candidates for Mexico's July 2 elections. If natural gas and gasoline prices are cut, consumption and air pollution will skyrocket, they warn.
Japan allegedly tried to bribe Central American countries ahead of the International Whaling Commission meeting to support an end to the moratorium on commercial whale hunting. Honduras and Guatemala deny there was any such pressure.