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5 votes
Accepted

How can I test the Air Quality?

The AQI calculation does not require that all pollutants be measured. Instead, it uses the pollutants that are available and then uses a function (chosen by the overarching regulatory agency) that ...
f.thorpe's user avatar
  • 13.7k
3 votes
Accepted

How can smartphones help geologists in the field?

I know a young geologist using his smartphone as a compass. When we were in the field doing structural measurements together, I would: Record a waypoint using my hiking GPS Take the measurement with ...
Jean-Marie Prival's user avatar
3 votes

How can smartphones help geologists in the field?

Part of the answer lies in where the geologist will be working and if there will be coverage by cellular/mobile telephone networks. It is my experience that a number of geologists, particularly ...
Fred's user avatar
  • 24.7k
2 votes

How many people could be fed in this world?

As mentioned in the comments, 200 billion people is an unrealistic world population. However, according to the FAO and the U.N. (e.g. 1, 2, 3), current levels of food production are more than ...
Pat's user avatar
  • 362
2 votes

Is there major potential for vertical farming?

As our planet gets warmer less area will be avaliable for farming so vertical farming will be needed to supply food for a growing population. Vertical farming will not replace traditional farming but ...
trond hansen's user avatar
  • 1,888
2 votes

What are the inhibiting factors that are hindering ocean wave-based electricity generation?

Factors that inhibit the exploitation of ocean wave energy: Only seaboard countries can have primary access to ocean waves. Some seaboard countries have long coastlines, other have short coast ...
Fred's user avatar
  • 24.7k
1 vote

Can soil color give accurate data about properties which affect it?

This is to a certain degree possible. See this article: https://dl.sciencesocieties.org/publications/sssaj/abstracts/77/6/2173
mace's user avatar
  • 472
1 vote

How can I test the Air Quality?

Ambient or roadside concentrations for each pollutant, over different averaging times, will be converted into an index value. In general, there are three common methods to achieve this. The most ...
PeterStricker's user avatar

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