From Robert F. Kennedy Jr.’s food pyramid to online influencers, beef has become more than just a source of protein.

© Claire Merchlinsky/The New York Times; Photographs by Getty

From Robert F. Kennedy Jr.’s food pyramid to online influencers, beef has become more than just a source of protein.

© Claire Merchlinsky/The New York Times; Photographs by Getty

Just as we changed our thinking around physical fitness, we need to change our attitude toward cognitive fitness.

In Ohio after a toxic chemical accident, finding common ground in the country’s health wars.