MuchMoreThanMuscle saidI brought this up once in a thread about how all life that ends on our planet impacts the weight of the world. For the billions of years this planet has been around I cannot even try to guess how much more the world weighs from all matter that has died and decayed on this planet (not just humans but all animal and plant life).
It's amazing that the planet gains 100,000lb a year from what we can read in the post that amoonhawk provided. Imagine how that plus what I mentioned in the paragraph above has an effect on everything. How long will this go until the planet can no longer support itself or result in changes that will significantly if not drastically effect life as we know it on this planet?
Can I just point out that the planet hasn't gained any mass from decayed life whatsoever, that mass was already on the planet as elements and compounds or previous life that died and was recycled into new life. The Earth is a closed system, more or less. What is here now is being recycled over and over again, and added to by dust and rock falling from space.
When someone dies and is put in the ground they aren't making the Earth 'heavier' with their body weight, their molecules are from the planet and are returning to the planet, or simply stationary now instead of walking around on two feet. I mean really, we all contribute to the mass of the planet since we spend the majority of our lives except when flying or jumping in contact with the Earth's surface.