New study casts doubt on theory about the role comets played in kick-starting life on Earth CTV NewsScientists say decades-old theory on the origin of life might be wrong CNNDid comets bring life to Earth? New Cambridge study weighs in MashableComets probably didn’t deliver life’s building blocks to Earth Science NewsAncient Comets Carried Organic Compounds, But They Didn’t Survive Crashing Into Earth Universe Today
