div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-cause-of-an-ice-age-5796cedcd1ee4htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Cause of an Ice Age loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader031vdocumentsmxreader031viewer20220204055750679b1a28ab0f07ac5167html5thumbnails1jpg width=140 height=200 divp© 1895 Nature Publishing Grouppdiv