Thirty years ago, scientists and engineers launched a new satellite to study the rising and falling of seas over time, a task that once could only be done from the coast. TOPEX/Poseidon rocketed into space on August 10, 1992, and started a 30-year record of ocean surface height around the world. The observations have confirmed on a global scale what scientists previously saw from the shoreline: the seas are rising, and the pace is quickening.
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