The Washington Monument looms behind a flower bed.
Biographer Candice Millard talks about the courageous, independent, largely forgotten US president – James Garfield – whose term was cut short by an assassin's bullet.
Kraken skeptics say a new theory proposing the existence of a real-life 200-million-year-old Kraken sea monster involves too much inference and guesswork to be serious science.
'Losing Paradise,' a new botanical art exhibition of 44 rare species, illustrates the art form's enduring value – even in this age of digital.
'Balaur bondoc,' a new species of dinosaur discovered in Romania, is a close relative of Velociraptor, but developed several striking evolutionary differences because it lived on an island.