There are many applications which can take advantage of hyperspectral remote sensing. 1  Atmosphere: water vapor, cloud properties, aerosols. 2  Ecology: chlorophyll, leaf water, cellulose, pigmemts, lignin. 3  Geology: mineral and soil types.  Coastal Waters: chlorophyll, phytoplankton, dissolved organic materials, suspended sediments.
The digital footprint applicable specifically to the World Wide Web is the internet footprint; also known as cyber shadow, electronic footprint, or digital shadow, information is left behind as a result of a user's web-browsing and stored as cookies.
In 2007, the Global Footprint Network estimated the global ecological footprint as 1.5 planet Earths; that is, they judged that ecological services were being used 1.5 times as quickly as they were being renewed. Ecological footprint for different nations compared to their Human Development Index. Ecological footprints can be calculated at any scale: for an activity, a person, a community, a city, a region, a nation or humanity as a whole.