TASK DEFINITION: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
PROBLEM: HONG KONG/BEIJING (Reuters) - Chinese e-commerce firm Alibaba Group (BABA.N) has taken control of logistics unit  Cainiao  and pledged to spend 100 billion yuan ($15 billion) over five years to build out a global logistics network  underscoring aggressive expansion plans overseas.
Alibaba will invest 5.3 billion yuan to boost its stake in Cainiao Smart Logistics Network to 51 percent from 47 percent  giving it direct control over the loss-making affiliate  suggesting a rough valuation of  Cainiao  at around $20 billion.
âOur commitment to  Cainiao  and additional investment in logistics demonstrate Alibabaâs commitment to building the most-efficient logistic network in China and around the world â Alibaba CEO Daniel Zhang said in a statement on Tuesday.
 Cainiao  was the focus of an investigation last year by the U.S. Securities and Exchange Commission (SEC) into Alibabaâs accounting practices.
 Alibaba  which will gain an extra seat on Cainiaoâs board giving it four out of a total seven seats   added that more shares were issued in the funding round to other investors.  It  did not give details about the other issuances  which would impact  Cainiaoâs  valuation.
The investment also signals  Alibabaâs  intention to boost control over China âs  domestic warehousing and delivery market  increasingly competitive as firms seek to make use of troves of logistics data about the countryâs Internet-savvy shoppers.
In June major logistics company SF Holding cut ties with  Cainiao  which provides logistics support directly to Alibabaâs top e-commerce platform Taobao . SF Holding claimed Alibaba had requested data unrelated to an existing partnership agreement. Alibaba denied the claims.
A person close to Alibaba  who asked not to be named  said  Cainiao  was not currently considering an IPO.
Alibaba and  Cainiao  declined to comment.
Alibaba co-founded Cainiao in 2013  with partners including department store owner Intime Group  conglomerate Fosun Group and a handful of logistics companies. It oversees roughly 57 million deliveries a day.

SOLUTION: Alibaba takes control of logistics business pledges $15 billion to expand network

PROBLEM: Three Americans â Jeffrey C. Hall   Michael Rosbash and Michael W. Young â  have won the 2017 Nobel Prize in physiology or medicine for  their  work on molecular mechanisms that control circadian systems.
Hall was born in New York  Rosbash in Kansas City  and they both worked at Brandeis University.  Michael Young  was born in Miami and worked at Rockefeller University.
Jonathan Nackstrand / AFP/Getty Images Winners of the 2017 Nobel Prize in Physiology or Medicine Jeffrey C. Hall   Michael Rosbash and Michael W. Young  are pictured on a display during a press conference at the Karolinska Institute in Stockholm on Oct. 2  2017. Winners of the 2017 Nobel Prize in Physiology or Medicine Jeffrey C. Hall   Michael Rosbash and Michael W. Young  are pictured on a display during a press conference at the Karolinska Institute in Stockholm on Oct. 2  2017. (Jonathan Nackstrand / AFP/Getty Images) (Jonathan Nackstrand / AFP/Getty Images)
The trio's early work took place in 1984 when Hall and Rosbash worked together at Brandeis and  Young  at Rockefeller University to isolate the "period" gene  which controls the circadian rhythm of fruit flies. Hall and Rosbash then showed that the level of the protein encoded by this gene changes in a 24-hour cycle  going up during the day and down at night. They theorized that this protein blocked the activity of the period gene.

SOLUTION: Nobel in physiology medicine awarded to 3 Americans for discovery of 'clock genes'

PROBLEM: A Buffalo native  McMillan moved to the Washington area more than 10 years ago. Neighbors described her as the doting mother of a 19-year-old son named Jordan who was attending college in Virginia.
 McMillan worked for the Postal Service for years before joining the Washington Metropolitan Area Transit Authority in 2007 as a bus driver. In March  after two months of training  she began operating trains.
 "She was a wonderful person  very friendly  very helpful " said Leeza Kanwal  30  a neighbor who lived on the same floor as McMillan. "When I was pregnant  she would see me with a laundry basket and take it down to the laundry room for me."
 She recalled how McMillan would sit in the hall on Friday evenings with friends. "I knew that with them sitting outside watching  it was safe for my daughter to play in the hall " she added.

SOLUTION:
TRAIN VICTIMS ' BACKGROUNDS WERE AS VARIED AS THEIR CITY LIZ ROBBINS CONTRIBUTED REPORTING FROM NEW YORK.