Washington, March 25: A new study has indicated that elevated carbon dioxide impairs a key component of the defenses of plants against leaf-eating insects.

Washington, March 25: A study by scientists at the Smithsonian’s National Museum of Natural History in US, has provided new insight into the agricultural abilities of ants by determining that some of these insects are fungus farmers.

Using DNA sequencing, the scientists were able to construct an “evolutionary tree” of fungus-growing ants, which revealed a single pioneering ancestor that discovered agriculture approximately 50 million years ago.

In the past 25 million years, four different specialized agricultural systems have evolved, leading to the most recently evolved and best-known fungus-growing ant species—“leaf-cutter ants.”

The ants do not eat the leaves; they grow their fungus gardens on them and then eat the fungus.

Washington, Mar 25: The bond between you and your pet may not just be bound to planet Earth, for man’s beloved companions may one day follow him into space, says a leading scientist.

Endeavour astronaut Richard Linnehan, a former veterinarian, feels that your beloved dog or cat will be up in space for sure.

Washington, March 24 : Dame Helen Mirren has revealed that she was unfaz

New York, Mar 24 : The Musharraf regime has indirectly approved the US

Washington, March 23 : A new study on juvenile delinquency has found that participation in extra-curricular activities can definitely minimize the risky behaviors in young men and women.