Agence France-Presse: Poor countries will have to pay back aid given to them by Britain in an international aid project that was supposed to help them adapt to climate change, The Guardian newspaper said Saturday. The 800-million-pound scheme was announced in November, but the daily reported that almost all the money offered by Prime Minister Gordon Brown would have to be repaid with interest. The aid was expected to be made in direct grants to countries suffering storms, droughts and rises in sea …