Numismatics is the study and celebration of payment media (currencies), primarily with the focus on researching the production and use of coins to determine their rarity.

Operating profit is the total earnings from a company's core business operations excluding deductions of interest and tax.

What is cognitive development? Expert Dr Samantha Durrant answers parents' questions around this tricky subject, and how it affects babies, toddlers and preschoolers.

The 2024 presidential election will reverberate through the economy, climate policy, social issues and geopolitics. Follow the stories, results, data and implications here.