# data[].attributes.headline
How do you cut diamond, if it is the hardest material?

# data[].attributes.subject
How do you cut diamond, if it is the hardest material?

# data[].attributes.headline
Why does snow melt if you put salt on it?

# data[].attributes.subject
Why does snow melt if you put salt on it?

# data[].attributes.headline
Could we dig a tunnel through the centre of Earth?

# data[].attributes.subject
Could we dig a tunnel through the centre of Earth?

# data[].attributes.headline
Is it harmful to swallow your own phlegm?

# data[].attributes.subject
Is it harmful to swallow your own phlegm?

# data[].attributes.headline
Is Earth becoming heavier because its population is growing?

# data[].attributes.subject
Is Earth becoming heavier because its population is growing?

# data[].attributes.headline
Where does the water come from we drink in Budapest?

# data[].attributes.subject
Where does the water come from we drink in Budapest?

# data[].attributes.headline
What is the hardest part of a human body?

# data[].attributes.subject
What is the hardest part of a human body?

# data[].attributes.headline
How much water do you need for a cup of coffee?

# data[].attributes.subject
How much water do you need for a cup of coffee?

# data[].attributes.headline
Why do apples turn brown after you peel them?

# data[].attributes.subject
Why do apples turn brown after you peel them?

# data[].attributes.headline
How many trees provide enough oxygen for one person?

# data[].attributes.subject
How many trees provide enough oxygen for one person?

# data[].attributes.headline
What human body parts continue to grow throughout our lifetime?

# data[].attributes.subject
What human body parts continue to grow throughout our lifetime?