April 30, 2020
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A global plan under negotiation envisions designating 30 percent of land and sea as protected by 2030 — and 50 percent by 2050 — in order to revive ecosystems and safeguard the diversity of species on Earth, according to a draft text of the agreement under the U.N. Convention on Biodiversity. But is 30 percent, or even 50 percent, enough? And enough for what exactly — to slow extinction rates, or to protect everything that’s possible to protect, or something else entirely?
