EFFICIENT: The Bosch SDS-max carbide-tipped rotary hammer core bit features an effective wave design to transfer energy for up to 40 percent speedier drilling versus other bit designs. POWER ...

By drilling 1.7 miles beneath the icy surface, the team has pulled a 1.2 million-year-old ice core from Antarctic bedrock. The gases trapped in the core are expected to yield "high-resolution" ...