user: Can you give me some reasons why Hockey is not as popular in the United States as many other sports?

assistant: Yes,

1. Hockey requires a field of ice which can only naturally occur in colder climates which limits the geographic appeal of the sport. Also, ice rinks are not as readily available around the country as, say, a soccer field or basketball court.

2. Hockey is an expensive sport to play. One needs to purchase pads, sticks, helmets, and other gear, as well as rent out an ice rink for practices and games.

3. In addition to cost, the barrier for entry related to skill is quite high compared to most other sports. One must first be able to ice skate before playing hockey which is a skill many people don't have.

user: Identify which animal species is alive or extinct: Vegavis, Continental Tiger

assistant: Continental Tiger is alive, Vegavis is extinct.

user: Why is the sun more intense at high altitude

assistant: It's commonly known that the sun is more intense at higher altitudes. However, contrary to popular belief, the sun is not more intense due to being closer to the sun, but the angle of incidence of the sun. The angle of incidence is steeper, and therefore the density of the sun's  radiant energy is concentrated to a high density in a smaller area. This makes the sun's energy more intense