During the study period most countries had greater temperature changes from year to year than they have had historically.

VOA: special.2011.05.17

Doctor Ruhli says researchers used this method to study changes in the tuberculosis bacteria from two thousand year-old mummified tissue.

VOA: special.2010.06.29

Once he follows through on constitutional changes approved by the referendum, he will be allowed to run for another three-year term and run again after that if he likes.

VOA: standard.2009.08.14

And many agronomists hold that relying on year-to-year yield changes for modelling exaggerates the damage due to longer climate shifts.

ECONOMIST: Climate change and crops

The 23-year-old Briton said he was "looking forward to tackling" the changes to next year's cars.

BBC: Hamilton welcomes new regulations

Thousands of farmers continue to leave the land every year, responding to technological changes that have doubled agricultural productivity over the past half century.

ECONOMIST: True grit | The