Biodiversity: Why the nature crisis matters, in five graphics

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Human activities are destroying the natural world, leading to the extinction of animal and plant species at an alarming rate. Now, world leaders are promising action to tackle the problem. But will it be enough?

What is biodiversity and why does it matter?

Biodiversity is the variety of all living things on Earth, and how they fit together in the web of life, bringing oxygen, water, food and countless other benefits.

Recent reports and studies have produced alarming news about the state of nature.

Last year, an intergovernmental panel of scientists said one million animal and plant species were now threatened with extinction.

And this month, a report found global populations of mammals, birds, fish, amphibians and reptiles plunged by 68%, on average, between 1970 and 2016.

Are we living in an age of extinction?

Scientists have warned that we are entering the sixth mass extinction,

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Comparing The Major College Ranking Systems: How Methodology Matters

The major college ranking systems have all published their much-anticipated lists of the nation’s best colleges for this year. These lists continue to influence students, families, college administrators and the general public, even during a pandemic that has arguably rendered many of the ranking dimensions much less relevant than in the past.

How do the methodologies employed by the various systems compare? And how similar are their rankings? Here’s a brief primer on four of the most influential approaches.

U.S. News & World Report

U.S. News & World Report’s 2021 Best Colleges rankings ranks more than 1,400 colleges and universities granting baccalaureate degrees. Now in its 36th year, it’s the dean of all ranking systems.

U.S. News revises its methodology over time, and this year it

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