Ecological environmental problems are a focus gaining widespreadconcerns in the world currently. It is an obligatory social responsibilityneeding to be undertaken by contemporary artists to call on people toprotect and improve the ecological environment and maintain andconstruct the common home of mankind's survival with the art form.With ecology and homeland as a theme and backed-up by the Ministryof Culture， the Fourth Beijing International Art Biennale will be onshow at the Art Museum of China from September 20 to October 4. Itwill exhibit more than 500 pieces of painting， sculpture， installation，video and miscellaneous works. These works concentrate on showingart thinking of the global artists in earth’s ecological problems， andtheir different artistic styles and enthusiasm of caring for the earth hometogether by multi-angle images， and more comprehensively reflectingcontemporary art environment in the globe.