Why the sky appears blue?

Violet and blue light have short waves and are scattered then times more than red light waves by atmosphere. While the red light goes almost straight through the atmosphere, blue and violet are scattered by particles in the atmosphere. Thus we see a blue sky.

Sunsets appear reddish Why?

In the evening, the setting sun appears like a beautiful crimson red ball. But we all know it has not changed its color.
Sunlight contains all colors. But the atmosphere on, around and over the earth contains molecules of water, vapor, dust, air and other impurities. The sunlight which passes through these media gets scattered.
Our atmosphere scatters blue, violet and green colors much more than it does the red and yellow. Thus we can see more of red and yellow color and we have a crimson red sky in the evening. So when Sun sets it appears red to us.

How does the sea affect climates?

On hot days at the seaside, cool breezes blow inland from the sea. This is because land warms up faster that water. Hot air over the land rises, and cool air from the sea is sucked in. At night, the reversal happens, because the land cools faster than water. In this way, the sea moderates the climate of coast lands.
Ocean currents also play a part. Onshore winds are warmed or chilled by ocean currents, and the effects of these winds are felt some way inland
The effect of the oceans is slight in the hearts of continents. Central Asia and North America have extreme continental climates. Winters are far colder and summers hotter than coast lands in the same latitude

Where is the World's sunniest place?

We listen to weather forecasts to find out how warm and sunny, wet or windy the weather is likely to be. People in Sahara, in North Africa, don't have this problem. This is the world's sunniest place, with an average of over 4,300 hrs of sunshine a year - nearly 12 hrs a day!