On April 22, is a festival, the world earth day may not be known. 2013 is the world earth day theme of 44: cherish the earth's resources transformation of the mode of development, promoting ecological civilization and beautiful China.

　　The world earth day originated in the United States. In 1969, the democratic senator gaylord? Nielsen, held in the national universities campus environmental question papers. Dennis was 25 years old so at harvard law school student? Hayes will soon nelson's proposal into a across the country develop the specific large-scale community activities, and get a lot of young students widespread support. On April 22, 1970, the United States for the first time held a huge "earth day" activity. This is the first time in human history of large-scale mass environmental movement. As the beginning of modern environmental movement, earth day 'activities to promote the establishment of a number of national environmental laws and regulations.

　　4月22日是一個(gè)大家可能不知道的節(jié)日——世界地球日。2013年是第44個(gè)世界地球日主題為：珍惜地球資源轉(zhuǎn)變發(fā)展方式——促進(jìn)生態(tài)文明共建美麗中國(guó)。

　　世界地球日活動(dòng)起源于美國(guó)。1969年，美國(guó)民主黨參議員蓋洛德?尼爾森提議，在全國(guó)各大學(xué)校園內(nèi)舉辦環(huán)保問題講演會(huì)。當(dāng)時(shí)25歲得哈佛大學(xué)法學(xué)院學(xué)生丹尼斯?海斯很快就將尼爾森的提議變成了一個(gè)在全美各地展開大規(guī)模社區(qū)性活動(dòng)的具體構(gòu)想，并得到很多青年學(xué)生的普遍支持。1970年4月22日，美國(guó)首次舉行了聲勢(shì)浩大的“地球日”活動(dòng)。這是人類有史以來第一次規(guī)模宏大的群眾性環(huán)境保護(hù)運(yùn)動(dòng)。作為人類現(xiàn)代環(huán)保運(yùn)動(dòng)的開端，“地球日’活動(dòng)推動(dòng)了多個(gè)國(guó)家環(huán)境法規(guī)的建立。