The effects of the melting polar ice caps may one day be felt well beyond the poles, though. As the polar ice caps shrink, sea levels begin to rise, creating serious problems for coastal areas around the globe. Fortunately, we can do our part to slow down and prevent the environmental changes causing the polar ice caps to melt.
Paabo and colleagues used a new method for sequencing ancient, degraded genetic material to put together the 400,000-year-old specimen's mitochondrial genome. It is the oldest DNA ever found outside permafrost conditions -- in other words, it was not permanently frozen.
Jaw bone fossil discovered in Ethiopia is oldest known human lineage remains. Around 400,000 years older than previous discovery of homo lineage, 2.8m-year-old jaw and five teeth was found on rocky slope in Afar region. science editor.