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All domains⚡ Energy🧬 Health🛡️ Defense🌍 Climate🛰️ Space🧪 Materials
Energy
ActiveLow-cost geothermal drill head for shallow wells
Design a sub-$5K drill head capable of reaching 300m at 80°C source temperatures for residential geothermal.
18
branches
287
contributors
42%
progress
1.5M HC bounty
View details →Health
SynthesizingmRNA stabilisation at room temperature
Find lipid formulations that keep mRNA payloads viable for 30+ days without cold chain.
41
branches
612
contributors
78%
progress
3.2M HC bounty
View details →Defense
ActiveLow-bandwidth drone swarm coordination protocol
Design a sub-50bps mesh protocol enabling 100+ drones to coordinate without GPS in contested environments.
22
branches
198
contributors
31%
progress
2.4M HC bounty
View details →Climate
FormingModular direct air capture for community deployment
A shipping-container-sized DAC unit capturing 1 ton CO₂/day at less than $200/ton operating cost.
7
branches
89
contributors
12%
progress
5M HC bounty
View details →Space
ActiveCislunar communication relay constellation
Architect an 8-satellite constellation for continuous Earth-Moon comms with sub-$50M total mass-to-LEO cost.
12
branches
143
contributors
55%
progress
4.2M HC bounty
View details →Materials
ValidatedHigh-density sodium-ion cathode chemistry
Sodium-ion cathode formulation reaching 180 Wh/kg with 5,000 cycle life and earth-abundant materials.
28
branches
421
contributors
100%
progress
1.8M HC bounty
View details →