"Living coastlines" could be fortified with coconuts to prevent coastal erosion / support wildlife
Reintroducing wolves could be both good and bad
Sonar / noise could not harm whales / marine life
Ponds could be good for the environment
Illegal marijuana growers / cartels could be stopped in California
Seawalls could be living
Wildlife conservation could involve gaming / active ecological intervention
Whales / wildlife could be prevented from being struck by ships
Fake spiderwebs could not be used outside to not harm wildlife
Rodent / insect poison could not injure / kill birds of prey, snakes, and larger animals
Cruise ships could pollute less / dump less sewage / use different fuel
Endangered species field guides / apps could be developed to aid law enforcement
"Forest backpacks" could prevent illegal logging / encourage sustainable forestry
Leaky septic tanks and fertilizer runoff could be prevented to provide seagrass to manatees
Bullets could be made from copper or steel to prevent lead poisoning in animal food chains
Beavers could restore habitats and protect against climate change / floods
Hedgerows could be good for the environment and agriculture
Sustainable forestry and fishing practices could become viable livelihoods
Anti-poaching rangers could be better monitored for human rights abuses
Land and sea could be rewild-ed
Rail lines could become parks, hiking trails, art, or wildlife corridors
Wildlife corridors could encourage biodiversity and conservation
Deep sea mining could be destructive
City buildings could be dimmed at night to save birds
Synthetic aperture radar (SAR) could help with wildlife conservation
Seafood could be made from plants
National parks could be created in warzones / post-conflict areas
Advanced geospatial monitoring and mining tools preventing use of mercury/opportunities for miners could protect the environment
Gold mining could not destroy the Amazon rainforest
The demand for rosewood furniture could be decreased to save lemurs, endangered species, and forests
The Pebble mine could not be built or be built safely in Alaska
Ad campaigns could reduce demand for products that harm wildlife conservation
Dehorning rhinos, tracking devices, and/or rhino ranches could help save them
Substitute man-made rhino horns and elephant tusks could be sold
Dams could harm river ecosystems and wildlife
Wildlife bridges / tunnels could save animals and people
Transformative, eco-friendly, and educational nature experiences could lead to conservation
Lions, leopards, cheetahs, wolves, and other animals could be scared away by flashing lights
Endangered species and plants could be moved to less threatened environments
Dogs could scare away bears and coyotes
Milkweed could be planted to aid monarch butterfly migration
Signal processing could detect gunshots from animal poachers
Palm / coconut oil use could be truly certified as sustainable
Glysophate / pesticides / herbicides could have harmful effects on animal / human health
Zoos could be inhumane
Feral cats could be trapped, neutered, and returned
Wild animals could have hospitals
Water could be provided to wild animals during droughts
Limited legal hunting of animals could lead to conservation
Seismic blasting could be changed to prevent damage to ocean ecosystems
How zoos can be more popular
Extinct species could be brought back to life
Natural predators could be trained to hunt lionfish
Herding livestock could prevent desertification
