Neil deGrasse Tyson: After death, your energy returns to Earth or travels to the stars

Astrophysicist Neil deGrasse Tyson explains on Startalk that after death your body's energy isn’t destroyed: burying you returns energy to the Earth via microbes, while cremation turns it into heat radiated into space, potentially reaching Alpha Centauri. He frames this in terms of the first law of thermodynamics and notes a debate between eco-friendly burial versus cremation.