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With an aim to boost the population of endangered Sierra Nevada bighorn sheep, a group of agencies has released a dozen endangered sheep at Yosemite National Park late last week.

The group including the California Department of Fish and Wildlife, Yosemite, Sequoia, and Kings Canyon national parks, Inyo National Forest and the US Fish and Wildlife Service started working on the project from Thursday in the Sierra mountain range.

The work continued through the weekend. In the work, nine ewes and three rams from the Inyo National Forest and Sequoia National Park were brought to the Cathedral Range of mountains in Yosemite.

UnitedHealth has announced a deal to buy pharmacy benefits manager Catamaran Corp. for $12.8 billion. The move is a part of pharmacy benefits company fight against rising prescription drug costs.

The work of Pharmacy benefits managers is to help negotiate the prices that customers pay for prescription drugs.

For customers, they are like a key component in the push to contain soaring costs from specialty drugs, complex medicines that can represent treatment breakthroughs. Usually, such drugs cost much higher than other drugs.

The rise in costs due to these drugs may affect more patients as use of the treatments is growing and coverage for them is shrinking.

In a bid to increase sales, Volvo Cars has decided to open an assembly plant in the US, said The Associated Press. For the North American plant, Volvo Cars would be required to shell out an estimated $500 million. The plant will help strengthen Volvo in a new push by the automaker in the US market.

Reports have revealed that the automaker has considered various locations for the construction of the assembly plant, but has not disclosed the short list of locations as of now. The company is expected to make the announcement in next few months.

The scuffed and rusty disc-shaped front end of the broken tunnel-boring machine has been lifted by Crews from the ground in Seattle. Crews have pulled it out of a 120-foot-deep pit to do repair work.

According to the Seattle Times, it seems that the process is going smoothly with the 2,000-ton machine segment emerging from the ground. The Dutch lift company, contractor Seattle Tunnel Partners and machine maker Hitachi have been praised by Matt Preedy, deputy Highway 99 tunnel administrator for the Washington State Department of Transportation (WSDOT), for devising a good lifting plan and carrying it out.

Philips, the Netherlands-based consumer electronics firm, said on Tuesday that it has finally decided to sell an 80.1% stake in the lighting components division for $2.8 billion to Go Scale Capital.

Go Scale Capital is a new investment fund that focuses on LEDs and electric car battery technology.

Amsterdam-headquartered company said that the deal values the subsidiary, which comprises an automotive light unit and Philips' 'Lumileds' LED business, at $3.3 billion in cash and debt.

This division of the company reported a profit of nearly 141 million euros in 2014 on sales of 1.42 billion.

Go Scale, which also has other investments in LEDs and electric car battery technology, said in a statement that it aims at expanding the businesses of using LEDs in cars.

Elon Musk, chief product architect of Tesla Motors tweeted that the company would introduce a major new product line next month. Musk tweeted that the new product line will be revealed at Hawthorne Design Studio on Thursday 8pm, April 30. Shares in the electric car company jumped 3% to $190.97 on the news.

Some reports mentioned that the product might be a home battery based on a technology used in the Tesla vehicles. Musk has spoken about it during a February earnings call.

At that time, he said, "We're going to unveil some of the Tesla home battery or consumer battery that will be for use in people's houses or businesses, fairly soon. We have the design done, and it should start going into production probably in about six months or so".