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Winnipeg Free Press By: Jen Zoratti | Posted: 7:00 PM CDT Friday, Apr. 23, 2021 Save to Read Later At first blush, they look like regular coffee cups, stowed in neat stacks. There are thousands of them, and they are all different — some have roses climbing the sides, others are stark white — evoking kitchens and café tables, and the intimate conversations, connections and rituals those spaces allow. At first blush, they look like regular coffee cups, stowed in neat stacks. There are thousands of them, and they are all different — s...

 E-Mail IMAGE: Since the discovery that atmospheric carbon dioxide (CO2) concentrations were lower during past ice ages, the cause has been a mystery. Now, Princeton geoscientists Danny Sigman and Ellen Ai (seen... view more  Credit: Laura Pedrick The last million years of Earth history have been characterized by frequent "glacial-interglacial cycles," large swings in climate that are linked to the growing and shrinking of massive, continent-spanning ice sheets. These cycles are triggered by subtle oscillations in Earth's orbit and rotation, but the orbital oscillations are too subt...