For hundreds of thousands of years preceding the industrial revolution, the concentration of the greenhouse gas carbon dioxide in the atmosphere didn't exceed 280 parts per million. (dotearth.blogs.nytimes.com)
So what had happened for many years preceding this illness, and to some extent throughout his whole life, was gone. (discovermagazine.com)
Previously, families provided tax and financial information for the tax year preceding the academic year. (studentloancoach.info)