lede_post_card_default

lede_post_card_stacked

lede_post_card_featured_post

lede_post_card_featured_post_3:2

lede_post_card_featured_post_1:1

lede_post_card_featured_posts_hero

lede_post_card_featured_posts_hero_3:2

lede_post_card_featured_posts_hero_1:1

lede_post_card_featured_posts_sidebar

lede_post_card_highlighted_post

lede_post_card_horizontal_a

lede_post_card_horizontal_c

lede_post_card_related_post

lede_post_card_square

lede_article_featured_16x9

lede_article_featured_16x9_full_width

lede_article_featured_3x2

lede_article_featured_3x2_full_width

lede_article_featured_1x1

lede_article_featured_1x1_full_width

lede_article_featured_flexible

lede_article_featured_flexible_full_width

lede_article_content

lede_article_content_wide_width

lede_article_content_full_width

lede_byline_avatar_post_card

lede_byline_avatar_highlight

lede_profile_coral_avatar

lede_logo

lede_logo_banner

lede_logo_footer_banner

lede_logo_simple_header

lede_sponsorship_logo

lede_sponsorship_logo_river_card

lede_sponsorship_homepage_card_logo

lede_sponsorship_homepage_card

lede_leaderboard

Footer 1

Nav Bar

Nautilus

<p>Brian Gallagher is an associate editor at <i>Nautilus</i>. Follow him on X (formerly known as Twitter) <a href="https://twitter.com/bsgallagher/" rel="noopener">@bsgallagher</a>.</p>


Brian Gallagher

Microbiology

The $1 Billion Misunderstanding of Aging

Adrienne Day

Health

Alzheimer’s Early Tell

Veronique Greenwood

Neuroscience

Sleep: When Brain Cells Shrink & Neuro Trash Is Flushed Away

alzheimer's