In August 2009 Silva switched to the Green Party, mostly in protest over the Worker Party’s environmental policies. Among many other honors, Silva has received a Goldman Environmental Prize and was declared a “Champion of the Earth” by the United Nations Environment Program.
Sa Agosto 2009 Silva lumipat sa Green Party, karamihan sa may pasubali sa paglipas ng patakaran sa kapaligiran ng Manggagawa Partido. Kabilang sa maraming iba pang mga parangal, Silva ay nakatanggap ng Goldman Environmental Prize at ay ipinahayag ng isang " Champion ng Earth "sa pamamagitan ng United Nations Environment Program .