div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-great-ice-age-5796ca0a0b157htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Great Ice Age loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentssitereader036viewer2022080107575067981a28ab0f07ac4440html5thumbnails1jpg width=140 height=200 divp© 1892 Nature Publishing Grouppdiv