52 If we put humans on planets with atmospheres different from Earth's atmosphere, but still containing oxygen, would humans be able to breathe? 2015-02-17T18:24:44.640

51 Could dinosaurs breathe modern air? 2019-11-19T12:45:18.537

34 What would be the effects on the human body if the oxygen level increased by a lot? 2014-11-25T11:19:32.380

29 Can a generation ship withstand its own oxygen and daily wear for many thousands of years? 2019-05-16T05:52:34.317

19 Is possible to make an "almost-perfectly" sealed ship? 2017-07-24T02:17:53.630

16 Oxygen - 100% plant-free! 2016-03-01T11:43:58.477

14 What can I add to an oxygen/nitrogen atmosphere to make it unpalatable or poisonous to humans, yet stable and breathable to local creatures? 2017-04-21T06:46:51.943

12 How do I make oxygen for a generation ship? 2016-09-16T18:33:24.573

12 How Do I Supplement Oxygen Intake? 2016-12-10T19:52:07.470

11 What is the highest concentration of oxygen a human being can reasonably survive? 2017-01-27T18:23:21.707

10 How to make a human that doesn't need to breathe 2017-11-21T01:10:45.637

10 Alternative elements for oxygen transport in an alien blood 2018-06-07T17:49:24.857

9 What amount of forrest-fire in square km or metric tons, would be necesary to bring oxygen levels below 19.5% that humans require to stay alive? 2018-11-14T06:45:52.923

9 Sustainability of Regular Global Wildfires Due to Oxygen Rich Atmosphere 2019-12-24T07:18:47.987

8 What would happen if the oxygen levels decreased by 15 percent? 2014-11-25T20:49:59.363

8 How many people can live on the oxygen provided by Earth? 2015-12-04T16:34:09.180

8 Vanishing oxygen 2016-02-12T09:57:38.903

8 Archipelago worlds build up atmospheric oxygen faster? 2019-07-05T03:11:12.203

7 World with low amount of oxygen like Everest dead zone: can people adapt? 2020-01-24T10:59:33.153

6 Is the vibrancy of the color of blood visibly affected by blood cell content? 2015-06-26T18:03:49.640

6 Space Farms: algae vs plants for food/oxygen? 2017-01-25T19:11:11.803

6 Can you have reduced visibility (due to fog) but an atmosphere that is still breathable? 2018-05-16T02:37:17.213

6 Can a bin bag supply enough air to escape? 2018-09-18T16:24:06.490

6 Producing oxygen without plants 2018-10-09T22:34:27.853

6 Can enough CO2 be captured, in order to reduce global warming, to reduce oxygen levels to suffocating levels? 2019-02-19T16:43:36.923

5 What properties would make a plant ideal for use on a space ship? 2015-02-27T18:57:24.863

5 What would happen in a world with no air? 2015-11-03T00:51:11.340

5 Looking to optimize the atmospheric gas mix and pressure for humans for minimal cellular degeneration 2018-04-08T12:49:11.603

5 A world where underwater fire is possible 2018-06-01T10:09:52.897

5 Metallic oxygen as a possible future material? 2018-06-22T08:06:30.203

5 How large does a human’s plastron need to be? 2018-08-28T15:41:13.217

5 Changing air composition on another planet 2019-09-08T05:51:05.937

5 Generating breathable air on Europa? 2020-01-21T15:38:50.077

4 Is atmospheric composition based on water content? 2016-09-26T20:01:15.743

3 What would happen if oxygen were to briefly disappear from Earth's atmosphere, then reappear? 2015-03-31T04:40:28.753

3 How much oxygen is too much? 2016-06-27T22:10:31.283

3 Is it possible for the ocean to be deprived of oxygen within 1 year? 2017-09-22T02:59:41.733

2 could different bloods of the same metal type mix? 2016-01-02T08:04:16.457

2 Lowered air pressure with higher oxygen content 2016-08-10T02:14:21.987

1 If the oxygen is introduced into the flammable gas by a tube, does it produce stable combustion? And What does the flame look like? 2016-11-23T10:54:46.043

1 Fire on different oxygen density 2017-02-17T12:01:21.930

1 How could an earth like planet increase the amount of oxygen in the air 2017-09-13T08:59:10.033

1 What would have to happen for the world's oxygen to decrease at an alarming rate? 2017-10-09T08:01:50.850

1 Does oxygen have the power to heal people? 2017-10-27T09:35:26.303

0 Polycythemia good underground? 2017-02-02T00:33:39.173

0 Animal with inner membrane gas separation 2017-09-13T00:34:37.733

-1 Making the entire inner solar system have a breathable atmosphere? 2017-01-25T19:26:01.913

-2 2.5x atmospheric pressure + 25% atmospheric oxygen saturation level =? 2017-06-19T02:33:24.633

-4 What would happen if Earth's oxygen reached the Sun? 2015-04-10T00:51:50.917

-4 What volcanic gases & factors, isolated in pockets/caves under an oceanic crust, could create odd ecosystems and new extremophiles? 2017-01-21T02:33:55.477