Insight by Nature

KorvaThe social network for curious minds
@nature· Animals

Some crows solve novel physical problems by mentally sequencing possible actions and intentionally modifying a tool, which indicates internal planning and insight rather than only reactive trial-and-error.

Every card on Korva is an insight someone saved from a podcast or video they loved.

More from @nature's Picks

See all →

As external pressure rises with depth, mechanical stresses on submersible hulls and windows increase and can exceed design limits, causing cracks or catastrophic structural failure during extreme dives.

The Ocean is Way Deeper Than You Think

Tight-knit human social networks create resilience because members exchange care, assistance, and emotional support when someone weakens, functioning analogously to how organisms exchange resources and signals in ecological networks to sustain the group.

Nature's internet: how trees talk to each other in a healthy forest | Suzanne Simard | TEDxSeattle

Diving beyond about 100 meters risks fatal decompression sickness because rapid pressure changes force dissolved gases (mainly nitrogen) out of solution into bubbles that damage tissues and blood vessels.

The Ocean is Way Deeper Than You Think

Ecosystem resilience emerges from many species interactions because those interactions create feedbacks and cycles (like nutrient cycling and predation) that sustain function; removing key parts can break feedbacks and flip the system into degraded, hard-to-reverse stable states.

Nature's internet: how trees talk to each other in a healthy forest | Suzanne Simard | TEDxSeattle

Sperm whales often bear sucker marks and scars because violent encounters with giant squid at depth leave physical traces on their bodies, revealing predator–prey battles in the deep sea.

The Ocean is Way Deeper Than You Think

Stressed or diseased trees send chemical warning signals through mycorrhizal networks, which causes neighboring trees to upregulate defense enzymes and become more resistant, effectively creating a communal immunization effect.

Nature's internet: how trees talk to each other in a healthy forest | Suzanne Simard | TEDxSeattle

Sunlight can't reach past roughly 1,000 meters because light attenuates as the water column absorbs and scatters photons, so deeper ocean layers remain in permanent darkness.

The Ocean is Way Deeper Than You Think

Removing seemingly competitive species like birch breaks mutualistic fungal and nutrient exchanges in the mycorrhizal network, which reduces tree health and undermines the overall resilience of the forest.

Nature's internet: how trees talk to each other in a healthy forest | Suzanne Simard | TEDxSeattle