53 bicycles: A lateral thinking puzzle

Was the chemical reaction just rusting? I don’t know if that by itself would lower the oxygen enough. If rusting was involved, was it in combination with another chemical reaction?

Just rusting.

You win!

Cool! Well, not cool that someone died. You know what I mean…

I wouldn’t have thought that rust could scrub a large percentage of oxygen from air.

I should have said “substance,” but I guess the answer is still no.

A certain multinational company changed its plans some time back, and this change in plans has resulted in a significant boon to the conservation efforts for some endangered species. Despite this, this company is unpopular among many animal-rights groups, for completely unrelated reasons. Explain.
Amusingly, when I went to do research to verify the details of this one, I ended up at a Straight Dope article. Oddly, the link I found wasn’t to straightdope.com, but to a city newspaper that runs the column.

Is the change something to do with New Coke?

Is it a change like that where a company changed something they make?

Is it a change in something the company does?

Is the change something to do with recycling?

Is the change something to do with testing on animals?

Is the change something to do with New Coke?
No

Is it a change like that where a company changed something they make?
No

Is it a change in something the company does?
Question vague; please rephrase

Is the change something to do with recycling?
No

Is the change something to do with testing on animals?
No

Is the change related to the environment?

Oh, one other detail that I didn’t manage to get into the puzzle statement: The change in plans was due to something company never expected.

Is the change related to the environment?
No

Is the boon to birds? Mammals? Plants? Fungi? Reptiles?

Is there a negative effect on birds? Mammals? Plants? Fungi? Reptiles?

Is the boon to birds? No Mammals? Yes Plants? No Fungi? No Reptiles? Yes
Is there a negative effect on birds? Mammals? Plants? Fungi? Reptiles? No to all

Is the boon to reptiles to large (2m+) reptiles? Medium-sized ones (0.5m+)? Or small ones?

Is the boon sex-related? Egg-related?

Is the boon to reptiles to large (2m+) reptiles? No Medium-sized ones (0.5m+)? No Or small ones? Yes

Is the boon sex-related? Yes Egg-related? No

Are the endangered species closely related to one another?

Are the endangered species closely related to one another? No

Is the boon also to fish? Amphibians? Sharks? Cephalopods?
Is there a negative effect on fish? Amphibians? Sharks? Cephalopods?

Is the boon also to fish? Yes Amphibians? No Sharks? No Cephalopods? No
Is there a negative effect on fish? Amphibians? Sharks? Cephalopods? No to all

Is the multinational company involved in food production?

Is the multinational company involved in food production? No