For decades, scientists believed the Arctic Ocean was sealed under a massive slab of ice during the coldest ice ages — but new research proves otherwise. Sediment samples from the seafloor, paired ...

Commenced 1872, completed 1885.Addeddate 2016-03-25 05:21:09 Call number 9928952520001551 Camera Phase One, P65+ Identifier gri_33125012264293 Identifier-ark ark:/13960/t2v45471n Ocr_converted ...