Activity for ADSâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Answer | — |
A: Can there be a space age without petroleum (crude oil)? Definitely YES. But it would be much more longer, in different ways and we would live in the different world. Energy density is the key At each moment of progress mankind use the most cheap source of the energy with desired concentration. It's hard to imagine modern world without oil. It's hard to ... (more) |
— | over 7 years ago |