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Electric Eel, Electrophorus electricus, Venezuela. Photo: Reinhard Dirscherl / ullstein bild / Getty Images

Researchers are trying to find a safe, non-toxic way to power electric implants like pacemakers by looking at electric eels, according to Nature. Why it matters: If the prototype can be successfully developed, it could be safer for the body because it wouldn't be as potentially toxic as traditional batteries, and could eventually run on bodily fluids, per Nature. It's also flexible, transparent, and runs on a solution of salt and water.How it works: The fish (which are not true eels) have specialized cells electrocytes all along the length of their bodies. They change the electrocyte's conductivity varying the salt and mineral concentrations in the cells. This causes the cells to create a flow of charge-carrying ions, producing electricity. Each cell only produces a small charge, but stacked together they can produce up to 600 volts of electricity to locate and stun prey.

Thomas Schroeder, a chemical engineer at the University of Michigan, and his team made similar models of electrocytes using four different hydrogels made of polyacrylamide and water. They combined 2,500 units to produce 110 volts -- enough to potentially power "ultra-low-power devices, including some cardiac pacemakers," per Nature.

Go deeper

6 hours ago - Politics & Policy

Kellyanne Conway's parting power pointers

Kellyanne Conway addresses the 2020 Republican National Convention. Photo: Nicholas Kamm/AFP via Getty Images

Kellyanne Conway has seen power exercised as a pollster, campaign manager and senior counselor to President Trump. Now that his term in office has concluded, she shared her thoughts with Axios.

Why it matters: If there's a currency in this town, it's power, so we've asked several former Washington power brokers to share their best advice as a new administration and new Congress settle in.

6 hours ago - Politics & Policy

GOP holdouts press on with plans to crush Cheney

Screenshot of emails to a member of Congress from individuals who signed an Americans for Limited Government petition against Rep. Liz Cheney. Photo obtained by Axios

Pro-Trump holdouts in the House are forging ahead with an uphill campaign to oust Rep. Liz Cheney as head of the chamber's Republican caucus even though Minority Leader Kevin McCarthy told them to back down.

Why it matters: What happens next will be a test of McCarthy's party control and the sincerity of his opposition to the movement. Cheney (R-Wyo.) is seen as a potential leadership rival to the California Republican.

Democrats aim to punish House GOP for Capitol riot

Speaker Nancy Pelosi passes through a newly installed metal detector at the House floor entrance Thursday. Photo: Drew Angerer/Getty Images

House Democrats plan to take advantage of corporate efforts to cut funding for Republicans who opposed certifying the 2020 election results, with a plan to target vulnerable members in the pivotal 2022 midterms for their role in the Jan. 6 violence.

Why it matters: It's unclear whether the Democrats' strategy will manifest itself in ads or earned media in the targeted races or just be a stunt to raise money for themselves. But the Capitol violence will be central to the party's messaging as it seeks to maintain its narrow majorities in Congress.