Beef cattle grazing in tall plants.
Heavy rain - no problem with this volume of biomass to eat and trample.
Trampling prevents disruption to the soil surface = no erosion.
Trampling puts some of the plant in contact with the soil - the earthworms will transform that into more soil.
An improving soil will hold more and more rain water, plants will grow deeper roots - keeping the river clean.
Eat real red meat and animal fat; buy the best you can.
THIS GUY LIVES UNDER SFO'S TAKEOFF PATH SO HE BUILT A CEILING PROJECTOR THAT TRACKS EVERY PLANE FLYING OVER HIS HOUSE IN REAL TIME
he uses a cheap $30 radio receiver to pick up the signals that planes broadcast while flying.
then projects them onto his ceiling in real time
when a jet flies over his house you hear it outside and at the exact same moment a plane glides across his ceiling labeled with the airline, aircraft type, and destination
pure black background so the projector's rectangle disappears and only the aircraft are visible
but he didn't stop at planes
it also draws the real sky behind them. sun, moon, bright stars, constellations, and live satellites including the ISS. all at their true positions for his exact location and time in real time
so he's lying in bed watching the actual night sky projected onto his ceiling with real planes crossing through it as they take off from SFO
there is a huge market for every man alive that runs outside to see the helicopter
vibe coded the whole thing himself with a cheap radio, a projector, and some clever software
The philosophy entrance exam to ENS, France's most selective school and the one with the most Nobel Prizes per student worldwide.
This year's subject: "The authority of science." 6 hours. Handwritten.