研究人员发现了一座规模庞大的古代玛雅城市 Researchers in Mexico have discovered a large, lost Mayan city.

研究人员发现世界上最古老的蝌蚪 Scientists in Argentina have discovered the oldest-known remains of the tadpole.

研究人员：非洲大象数量急剧下降 African elephants are Earth's largest land animals.

研究人员希望让美洲栗树重现生机 “Chestnuts roasting on an open fire,

研究人员：巨型树懒和乳齿象曾与人类共同生活在美洲 A sloth is a furry animal that lives mainly in South and Central America.

研究人员利用激光研究古代秘鲁木乃伊 For more than 5,000 years, humans have covered themselves with permanent artistic designs known as tattoos.

研究人员：女性家庭关系对社会网络至关重要 A recent study suggests that female family ties were central to social networks in ancient Celtic society before the Roman invasion.

研究人员在古庞贝城发现一处浴场建筑群 Archeological research has uncovered another treasure of the ancient Roman city of Pompeii: a large private bathhouse.

密歇根州的研究人员致力于培育更强壮的苹果树 Researchers in the U.S. state of Michigan are looking for ways to help apple trees survive bad weather.

研究人员：NASA小行星样本中含有生命的“构成要素” Scientists examining material collected from an asteroid say it appears to contain some of the chemical building blocks of life.