More surprising facts

• Children can teach themselves complex subjects like biotechnology without a teacher.
• Most people instinctively associate round shapes with round sounds like 'Bouba' and spiky shapes with sharp sounds like 'Kiki'.
• People are more likely to accept a salary increase than a salary decrease, even if the total earnings are higher in the latter.
• Summer is hotter than winter because the Earth's tilt causes sunlight to spread out less, not because we are closer to the Sun.