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Nicknamed the father of environmental justice, Robert Bullard argues that researchers in the field have more reason than ever to back up their work with action.
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Roman numerals: glyph reuse by design。雷电模拟器官方版本下载对此有专业解读
Kosmos 482, which launched in 1972 on a mission to Venus, never made it out of Earth's orbit and instead broke into four pieces that have been circling the planet for more than five decades.