The saucer is cool so the coffee will conduct heat to the cool saucer. The coffee will also have more surface area so the coffee will evaporate faster and evaporation cools the liquid. If you put the bottle in a bucket of cold water, the bottle can only get as cold as the water. If you put a wet cloth on the bottle, the water will evaporate, causing cooling. If you keep wetting the cloth, enough water can evaporate to take enough heat away from the bottle to cool it below the temperature of the cold water in the bucket.
Icebergs cool the surrounding air.
Cold air can t hold as much moisture as warm air, so the extra moisture when the air cools condenses and makes fog. When the pressure above a liquid is increased, it is harder for bubbles to form. The bubbles have to withstand a higher pressure. The pressure in the bubbles depends on the temperature of the liquid. The liquid has to be hotter before bubbles can form and stay as bubbles so the boiling point is higher.