Rishabh Modi

Research

Questions I keep chasing.

Should we fear a cashless society? Why does a crossed-out price change what we're willing to pay? How does bias get into AI? Do coffee grounds really help plants grow? I like turning questions like these into essays, infographics, and experiments.

Why do coffee grounds help plants grow?

current research

EcoBean's coffee-ground fertilizer worked in testing, but I wanted to know why. I'm now turning that question into a British Science Association Gold CREST Award project.

  1. 2025 · EcoBeanThe first testMixing grounds straight into soil grew mold, so we switched to a coffee-ground "tea" fertilizer. Seedlings fed on day 4 grew far faster by day 5 than a water-only control.
  2. May 2026 · AP Chemistry finalThe chemistryWith my partner Liam, I traced the effect to nutrients, pH, equilibrium, and decomposition kinetics.
  3. Now · Gold CREST AwardThe full project70+ hours of research, testing, and a written report, assessed against the CREST Gold criteria.
See my research log ↗
All three labelled pots on Day 4 with the first sprouts
Day 4
A pink nitrogen test for the coffee fertilizer pot beside the LaMotte colour chart
Nitrogen test
A phosphorus test for the coffee fertilizer pot beside the LaMotte colour chart
Phosphorus test
A potassium titration beside the LaMotte EndPoint colour card
Potassium test
Harvested microgreens from each pot in three bowls, one on a kitchen scale
Harvest