|
Arktika terhangat dalam 20 abad
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Suhu di wilayah Arktika kini mendapai titik tertinggi dalam kurun 2.000 tahun, kata para ilmuwan. Para peneliti di Amerika Serikat menyatakan, ini merupakan salah satu pertanda paling jelas sejauh ini bahwa kegiatan manusia telah membuat bumi lebih panas. Scientists have produced evidence showing dramatically that the current temperature rise there is highly unusual. For most of the last two thousand years, the Arctic slowly cooled, a consequence of variations in the Earth's orbit. But over the last century, the cooling abruptlyreversed, and the region is now warmer than at any time in the 2,000 year record. Writing in the journal Science, the researchers say this shows how quickly the Arctic responds to climatic changes. Richard Black, BBC News produced evidence dramatically a consequence variations orbit abruptly reversed responds to climatic changes |
Berita utama saat ini
09 Oktober, 2009
Arktika terhangat dalam 20 abad
05 Oktober, 2009
Resesi pengaruhi merek terkemuka
30 September, 2009
Kemelut jalan satu arah di Paris
18 September, 2009
Mumi wanita ditemukan di Peru Other Stories
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||