And new figures published today show the voluntary approach, rather than compulsory charging, is the way to do it.
New figures published on June 17th showed that in the past year house prices in Britain increased by 10%.
Shock new figures published today reveal that household debt has soared by two-fifths in just six months.
This year, more students than ever were accepted on to science, technology, engineering and mathematics (STEM) courses, according to new figures published by the Higher Education Funding Council for England (Hefce).
For example, new figures published separately to the investment report today detailed how Green Bond issuance soared from $15bn in 2013 to $38bn last year.
New figures published last month show enrolment in healthcare exchanges is finally recovering after an initial slow take-up due to technical problems with the federally-run website.
Australia's greenhouse gas emissions continue to rise, fuelled by the expansion in gas exports and production, according to new figures published by the Department of Environment and Energy.
According to new figures published on April 1 in BusinessWeek, real wage gains for private-sector workers averaged 1.3percentt a year in the decade that ended in December 2001.
More students than ever have been accepted on to science, technology, engineering and mathematics (Stem) courses, according to new figures published by the Higher Education Funding Council (Hefce).
The number of cases under investigation is much higher than previously thought, according to new figures published by Neue Osnabrücker Zeitung newspaper.
According to new figures published on November 5th, America's output per hour worked has increased by 4.3% over the past year, thanks to big job cuts.
