Insight by Nature
Vertical ocean overturning powers circulation because warm surface water is less dense and stays afloat while cooling and higher salinity increase density and cause deep water to sink.
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See all →Because only about 5% of the seafloor has been accurately mapped, vast unmapped regions remain where deeper, undiscovered depressions could exist.
When a bird associates a person with threat it emits scolding displays that others observe and copy, causing avoidance and targeted scolding of that human to spread socially and persist across individuals and generations.
Mother trees preferentially allocate more carbon to genetically related seedlings because they can direct resources through fungal links to kin, especially after injury, effectively passing support and fitness benefits down their genetic lineage.
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.
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.
Play releases pleasure-related neurochemicals and provides low-risk practice with objects and movements, which strengthens neural connections that later support creative object use and novel problem-solving.
Strong equatorial evaporation helps seed large currents because intense heating concentrates salt at the surface, raising density and altering pressure gradients that contribute to the initiation of systems like the Gulf Stream.
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.