CHANGSHA -- Paddy-field remains dating back over 8,000 years have been discovered in Central China's Hunan province, according to the provincial cultural relics and archaeology research institute.

Paddy-field remains dating back over 8,000 years have been discovered in central China's Hunan Province ... including two ancient rice-paddy fields, trenches, house sites, pits, ditches, tombs ...

Rice cultivation ... its creation with China and other governments. It also wants to further research whether it might help to apply ethanol or oxantel to paddies to reduce methanogens without ...