Watch out! Some past participles are irregular. For example, He hecho mis deberes - I have done my homework. As you go around telling people what you’ve done, remember to keep the following rule in ...

There are currently ∼7,000 different living human languages. The peak of language diversity may have been ∼10,000 years ago when up to 20,000 different languages might have been spoken. Languages ...

This infographic shows a rise in numbers of irregular arrivals and fatalities in the Mediterranean and Western African routes between 2014 and 2026.

This code repository contains the ITS Irregular Terrain Model (ITM). ITM predicts terrestrial radiowave propagation for frequencies between 20 MHz and 20 GHz based on electromagnetic theory and ...