150 years of the periodic table: Test your knowledge
How much do you know about the iconic symbol of science pinned to every classroom wall?
from BBC News - Home https://bbc.in/2MCEeQO
from BBC News - Home https://bbc.in/2MCEeQO
Port Moresby: The world's most dangerous city to be a woman?
Ben Zand travels to Papua New Guinea's capital to meet the women finally saying no to violence. from BBC News - Home https://ift.tt/2R4AcCP
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